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#1968403 - 07/28/10 01:30 PM What is best thermostat brand ?
MetalSlug Offline


Registered: 07/24/10
Posts: 2171
Loc: vicksburg ms
Im changing my thermostat today, Just wonder what brand I should get, my autozone have one in duralast really cheap, just wonder who made duralast thermostat ? its any good ? thanks !
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05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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#1968406 - 07/28/10 01:33 PM Re: What is best thermostat brand ? [Re: MetalSlug]
mrsilv04 Offline


Registered: 12/08/06
Posts: 6456
Loc: Illinois
When it comes to thermostats, I only use one from the dealer.

OEM is the best quality on this one, and they seem to last longer.
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President of the Illinois chapter of 'Motorcyclists for Global Warming'.

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#1968411 - 07/28/10 01:37 PM Re: What is best thermostat brand ? [Re: mrsilv04]
OVERKILL Offline


Registered: 04/28/08
Posts: 26430
Loc: Ontario, Canada
Originally Posted By: mrsilv04
When it comes to thermostats, I only use one from the dealer.

OEM is the best quality on this one, and they seem to last longer.


Agreed!
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#1968414 - 07/28/10 01:42 PM Re: What is best thermostat brand ? [Re: OVERKILL]
Blokey Offline


Registered: 02/21/03
Posts: 916
Loc: GA, USA
Motorad Fail-Safe.
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"Drive safely, because the life you save... might be mine" - James Dean, Sept. 1955

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#1968429 - 07/28/10 01:53 PM Re: What is best thermostat brand ? [Re: MetalSlug]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
I've had good expierence with Stant especially the superstant.

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#1968433 - 07/28/10 01:56 PM Re: What is best thermostat brand ? [Re: mechanicx]
defektes Offline


Registered: 09/09/09
Posts: 3216
Loc: Hesperia, CA, USA
Superstant, OEM.
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#1968434 - 07/28/10 01:57 PM Re: What is best thermostat brand ? [Re: mechanicx]
Jimmy9190 Offline


Registered: 02/17/07
Posts: 3023
Loc: Clermont, Florida
Napa Super Stat. Robert Shaw is good too, if you can find one. Don't use a cheap thermostat. They don't open and close right and they won't last.
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2001 Dodge Dakota, 3.9 V6, 5-speed manual, 172K
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#1968475 - 07/28/10 02:42 PM Re: What is best thermostat brand ? [Re: Jimmy9190]
Chris142 Offline


Registered: 06/05/03
Posts: 11461
Loc: apple valley, ca
Dealer part is best. Stant Superstats are usually good, regular Stants are not. Robert Shaw were good but hard to find and now made in china.
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#1968497 - 07/28/10 03:02 PM Re: What is best thermostat brand ? [Re: Chris142]
FL_Rob Offline


Registered: 06/03/09
Posts: 1410
Loc: gulf coast FL.U.S.

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#1968504 - 07/28/10 03:06 PM Re: What is best thermostat brand ? [Re: FL_Rob]
MetalSlug Offline


Registered: 07/24/10
Posts: 2171
Loc: vicksburg ms
motorad any good ?
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05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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#1968511 - 07/28/10 03:09 PM Re: What is best thermostat brand ? [Re: MetalSlug]
Chris142 Offline


Registered: 06/05/03
Posts: 11461
Loc: apple valley, ca
Originally Posted By: CamaroT56
motorad any good ?
Where was it made? Israel? China?
_________________________
02 Wrangler super-s 1030
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04 Tahoe super-s 530
Z400 maxima 2050
KLR250 Maxima 1040
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#1968522 - 07/28/10 03:18 PM Re: What is best thermostat brand ? [Re: Chris142]
Hollow Offline


Registered: 02/29/08
Posts: 1070
Loc: the South
OEM for my Subaru.

The difference in design between the Subaru and the Stant is amazing.
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2003 Subaru Outback: 2.5 H4 143K
QSUD 5w30, Maxlife ATF, Mobil1 75w90
1992 Oldsmobile 88 3.8 V6 75K
Needs fixing. Lots of fixing.

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#1968526 - 07/28/10 03:21 PM Re: What is best thermostat brand ? [Re: Hollow]
daman Offline


Registered: 09/23/06
Posts: 10486
Loc: Bad Axe, MI
OEM or stant...
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"Always"....Mobil 1

Current fill: AFE 0w30

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#1968527 - 07/28/10 03:22 PM Re: What is best thermostat brand ? [Re: Hollow]
JHZR2 Offline



Registered: 12/14/02
Posts: 33783
Loc: New Jersey
OEM only. Test it in a pot of water first too...

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#1968551 - 07/28/10 03:41 PM Re: What is best thermostat brand ? [Re: JHZR2]
MetalSlug Offline


Registered: 07/24/10
Posts: 2171
Loc: vicksburg ms
who made oem for chevy ?
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05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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#1968692 - 07/28/10 06:42 PM Re: What is best thermostat brand ? [Re: MetalSlug]
StevieC Offline


Registered: 08/21/08
Posts: 14339
Loc: Niagara Falls, ON, CA (near)
OEM and Failsafe if it's an option and not the default.
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#1968776 - 07/28/10 08:01 PM Re: What is best thermostat brand ? [Re: MetalSlug]
Garak Offline


Registered: 12/05/09
Posts: 11625
Loc: Regina, Saskatchewan, Canada
Originally Posted By: CamaroT56
Im changing my thermostat today, Just wonder what brand I should get, my autozone have one in duralast really cheap, just wonder who made duralast thermostat ? its any good ? thanks !


Assuming it's a Camaro (or other GM product), a SuperStant or OEM would be your best bet. If there's any doubt whatsoever, stick with OEM.

For my 1990 Lincoln Town Car that I used to have, the Motorcraft was HALF the price of the Canadian Tire brand. Seeing a dealer undercut a major chain by that much is rare.

With my Audi 200 Turbo, the SuperStant is the wrong temperature, by a substantial margin, so I went with the OEM supplier, Wahler, for the correct temperature.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#1968837 - 07/28/10 09:10 PM Re: What is best thermostat brand ? [Re: MetalSlug]
mrsilv04 Offline


Registered: 12/08/06
Posts: 6456
Loc: Illinois
Originally Posted By: CamaroT56
who made oem for chevy ?


Well, it would be boxed and labelled as a GM or an AC Delco.

This is one of the LAST parts that I'd ever go cheap on.

_________________________

President of the Illinois chapter of 'Motorcyclists for Global Warming'.

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#1968996 - 07/29/10 01:02 AM Re: What is best thermostat brand ? [Re: MetalSlug]
UncleS2 Offline


Registered: 05/27/02
Posts: 3049
Loc: Far North East Texas
After my experiences with the Neon, I'd vote for a Fail-Safe thermostat over any OEM that goes shut upon failure.
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#1969003 - 07/29/10 01:13 AM Re: What is best thermostat brand ? [Re: UncleS2]
chevys10 Offline


Registered: 06/09/09
Posts: 306
Loc: Chicagoland
Put a Motorad failsafe in my Mazda 626...It stuck open within a month or so after install. It did not stick open due to overheating...just got a bad one. Put an Altrom from Napa which looked exactly like the OEM and it has been fine since.
_________________________
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2000 626 2.5L Synpower 10w30 NG Filt
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#1969039 - 07/29/10 04:58 AM Re: What is best thermostat brand ? [Re: mrsilv04]
demarpaint Offline


Registered: 07/03/05
Posts: 21325
Loc: NY
Originally Posted By: mrsilv04
When it comes to thermostats, I only use one from the dealer.

OEM is the best quality on this one, and they seem to last longer.


Same here! At least for Ford and GM that I've owned.
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GOD Bless our Troops


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#1969118 - 07/29/10 07:49 AM Re: What is best thermostat brand ? [Re: UncleS2]
StevieC Offline


Registered: 08/21/08
Posts: 14339
Loc: Niagara Falls, ON, CA (near)
Originally Posted By: Stuart Hughes
After my experiences with the Neon, I'd vote for a Fail-Safe thermostat over any OEM that goes shut upon failure.
My OEM thermostat from the dealer is failsafe. I know because when the last one failed locked open. I was thankful because I have an all aluminum engine. I could imagine the cost to fix things if it overheated. hide
_________________________
'06 Hyundai Sante Fe - 330K KM's
Current Oil: RLI 0w30 (Ask me why)

Don't be part of the Sheeple, check frequently for wool over your eyes. wink

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#1969218 - 07/29/10 10:20 AM Re: What is best thermostat brand ? [Re: StevieC]
OVERKILL Offline


Registered: 04/28/08
Posts: 26430
Loc: Ontario, Canada
Originally Posted By: StevieC
Originally Posted By: Stuart Hughes
After my experiences with the Neon, I'd vote for a Fail-Safe thermostat over any OEM that goes shut upon failure.
My OEM thermostat from the dealer is failsafe. I know because when the last one failed locked open. I was thankful because I have an all aluminum engine. I could imagine the cost to fix things if it overheated. hide


Yup, I would imagine the vast majority of them are.
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#1969250 - 07/29/10 11:00 AM Re: What is best thermostat brand ? [Re: OVERKILL]
MetalSlug Offline


Registered: 07/24/10
Posts: 2171
Loc: vicksburg ms
I bought a OEM 180* super stant, it ran a little hotter then I though, I support to be normal , but I want a little cooler, I went with duralast 160* ( I saw motorad by in germany Hehehe ). So I know it good quality. My car run alot cooler and drive alot power just like before. The one I pull out that been their for year is 160*, so I replace it with 160* and program with hypertech to make the fan turn on at 160*. Thanks for help every one.
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05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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#1969569 - 07/29/10 04:26 PM Re: What is best thermostat brand ? [Re: Chris142]
440Magnum Offline


Registered: 02/01/09
Posts: 6344
Loc: Texas
Originally Posted By: Chris142
Dealer part is best. Stant Superstats are usually good, regular Stants are not. Robert Shaw were good but hard to find and now made in china.


Robertshaw were BY FAR the best T-stat design ever. But yes, they're long gone and the design was bought by Mr. Gasket and manufacturing outsourced to China. They're pretty cheesily made now, but at least still have the nice "gate valve" mechanism that isn't affected by flow.

As for dealer parts- a few years after a given model year, the "OEM" parts sold at the dealer are made by the lowest bidder. There's absolutely NO guarantee that they're made by the real OEM.
_________________________
'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
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#1972207 - 08/01/10 04:21 PM Re: What is best thermostat brand ? [Re: 440Magnum]
The Critic Offline


Registered: 08/30/04
Posts: 17793
Loc: Walnut Creek, CA
Regular Stant works fine for me.

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#1972400 - 08/01/10 07:44 PM Re: What is best thermostat brand ? [Re: The Critic]
rslifkin Online   content


Registered: 06/27/10
Posts: 2218
Loc: Stamford, CT / Rochester, NY
The regular Stant works great in my Jeep as well. The previous t-stat looked identical to the Stant I put in yesterday, and I think it was original.
_________________________
1998 Jeep Grand Cherokee 5.9 Limited with Heads/Cam/Headers/Exhaust/Tune/Shift Kit (175k miles, bought with 100k)
Rotella T6 @ 6k OCI

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#1973388 - 08/02/10 05:01 PM Re: What is best thermostat brand ? [Re: rslifkin]
PurplePride Offline


Registered: 01/16/10
Posts: 526
Loc: Cali
How often do you guys replace your t-stats? Every coolant change?

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#1973391 - 08/02/10 05:05 PM Re: What is best thermostat brand ? [Re: PurplePride]
rslifkin Online   content


Registered: 06/27/10
Posts: 2218
Loc: Stamford, CT / Rochester, NY
I replace it if it's not holding temp right, or is showing other issues. On my Jeep, being that it's in a tough spot, and I had stuff apart around it this weekend while I was doing the plenum gasket, I replaced it just in case, as it wasn't much extra work.
_________________________
1998 Jeep Grand Cherokee 5.9 Limited with Heads/Cam/Headers/Exhaust/Tune/Shift Kit (175k miles, bought with 100k)
Rotella T6 @ 6k OCI

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#1973448 - 08/02/10 06:19 PM Re: What is best thermostat brand ? [Re: rslifkin]
Garak Offline


Registered: 12/05/09
Posts: 11625
Loc: Regina, Saskatchewan, Canada
I would agree. I could change the one on my Audi every coolant change, since it's an easy job (at least with my small hands, others recommend yanking the power steering pump) and uses an O-ring instead of a gasket. Others are more difficult.

If it's cheap and easy, go for it every coolant change. If one has a temperature gauge, then keep an eye on that. I've been lucky. Every thermostat failure I've had (even on the non-failsafe types) have resulted in them sticking open, rather than closed.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#1973502 - 08/02/10 07:19 PM Re: What is best thermostat brand ? [Re: Garak]
rslifkin Online   content


Registered: 06/27/10
Posts: 2218
Loc: Stamford, CT / Rochester, NY
I've only ever seen 1 t-stat fail (it was 22 years old) on a 454 marine engine. It stuck closed. Once the engine cooled and was refilled, it opened fine the next day. It was, of course, replaced ASAP.

Fortunately, my Jeep has temp and oil pressure gauges, and they're not dummy gauges, so they have no smoothing applied to the readings. The temp gauge actually shows the temp rising and falling 3-4* as the fan cycles in traffic, and the oil pressure gauge increases with RPM like the actual pressure.
_________________________
1998 Jeep Grand Cherokee 5.9 Limited with Heads/Cam/Headers/Exhaust/Tune/Shift Kit (175k miles, bought with 100k)
Rotella T6 @ 6k OCI

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#1973544 - 08/02/10 08:10 PM Re: What is best thermostat brand ? [Re: Garak]
PurplePride Offline


Registered: 01/16/10
Posts: 526
Loc: Cali
Thanks gents. What's "typical" lifespan of these? Average?

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#1973722 - 08/02/10 11:03 PM Re: What is best thermostat brand ? [Re: PurplePride]
HTSS_TR Offline


Registered: 04/17/06
Posts: 12902
Loc: Irvine, CA
Lifespan of OEM is about 8-12 years or 100-150k miles if you regularly changing your coolant every 3-5 years or 50-60k miles.
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'94 LS400
'00 E430
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#1973881 - 08/03/10 06:14 AM Re: What is best thermostat brand ? [Re: HTSS_TR]
SteveSRT8 Online   content


Registered: 10/10/08
Posts: 15141
Loc: Sunny Florida
Lifespan is effectively infinite for stock stats in GMC trucks. I have one running today with 400K miles on the original. Others with 250k.
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#1974122 - 08/03/10 10:30 AM Re: What is best thermostat brand ? [Re: PurplePride]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
I've seen many that start to act up around 5-7 year range. Usually what you see is they open too fast and the engine warms up slowly. It might even be unnoticable until it gets bad enough that the engine runs cold all the time in winter.

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#1974236 - 08/03/10 12:17 PM Re: What is best thermostat brand ? [Re: Hollow]
porcupine73 Offline


Registered: 10/06/05
Posts: 664
Loc: Buffalo, NY
Originally Posted By: HollowEyes
OEM for my Subaru.

The difference in design between the Subaru and the Stant is amazing.


Same here. I made this comparison pic while doing mine a few years back with the genuine Subaru on the left and the stant on the right

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#1974817 - 08/03/10 08:00 PM Re: What is best thermostat brand ? [Re: porcupine73]
PurplePride Offline


Registered: 01/16/10
Posts: 526
Loc: Cali
Wow - that's crazy! I'll stick with OEM too.
I've never regretted doing that - to he!! with saving a few bucks!

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#1974892 - 08/03/10 09:24 PM Re: What is best thermostat brand ? [Re: PurplePride]
HeHarHeWeh Offline


Registered: 02/19/08
Posts: 35
Loc: Vancouver, Canada
Here is the jobber one i pulled out of my integra compared to an oem one. jobber lasted less than 3 years.

_________________________
93 Acura Integra

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#1974969 - 08/03/10 10:18 PM Re: What is best thermostat brand ? [Re: HeHarHeWeh]
Garak Offline


Registered: 12/05/09
Posts: 11625
Loc: Regina, Saskatchewan, Canada
Wow, talk about different construction!
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#1975010 - 08/03/10 10:45 PM Re: What is best thermostat brand ? [Re: Garak]
MetalSlug Offline


Registered: 07/24/10
Posts: 2171
Loc: vicksburg ms
it been few day, since I change the thermostat and completely forgot about this topic lol. See some pix above , that big different from some OEM to aftermarket thermostat. Im running 160 autozone duralast ( motorad brand made from germany ), im happy with this. Look quality.
_________________________
05 Expedition 5.4L 3v Super Mobil 5w20 FL820s

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#1975473 - 08/04/10 11:45 AM Re: What is best thermostat brand ? [Re: MetalSlug]
Drew99GT Offline


Registered: 10/11/02
Posts: 20745
Loc: Colorado Springs
I recently installed a Motorrad in my Corolla; it also is much beefier then the Stant superstate I pulled out. Plus the Motorrad has the jiggle pin.

However, it does seem to be overcooling a bit. On long downhill stretches, the temp gauge is dropping a bit.

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#2424229 - 11/03/11 04:05 PM Re: What is best thermostat brand ? [Re: MetalSlug]
Billed Offline


Registered: 11/03/11
Posts: 2
Loc: Middle, Tennessee
Porcupine73,

Your photo speaks volumes; so I drove downtown to our Subaru dealer for a thermostat for my 2001 Outback 2.5. OUCH-----$42.23 before tax, at some point quality is just too expensive. Hope this one lasts the life of the car as it has 133k.

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#2424280 - 11/03/11 05:04 PM Re: What is best thermostat brand ? [Re: MetalSlug]
dailydriver Offline


Registered: 03/14/06
Posts: 7071
Loc: Bucks County, Pa.
Originally Posted By: MetalSlug
it been few day, since I change the thermostat and completely forgot about this topic lol. See some pix above , that big different from some OEM to aftermarket thermostat. Im running 160 autozone duralast ( motorad brand made from germany ), im happy with this. Look quality.


I know you are not on here much anymore, but in case you come back;

You cannot go wrong with the Moto-Rads for LT1/LS1 f-bodies!!
It's the ONLY brand I would use for our cars, and it is the brand which is actually IN the boxes labelled "HyperTech"/"Evans", and "SLP", but you did not pay the extra premium ($$) for those boxes, so you made out VERY well!! thumbsup cool
_________________________
2000 Z28 1SC 6 speed 175K miles
Red Line 0W-40/Sustina 0W-20 (20/80 mix)
Fram Ultra filter
Synpower 75W-140/4oz. XL-3
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#2424314 - 11/03/11 05:33 PM Re: What is best thermostat brand ? [Re: MetalSlug]
Bamboooo Offline


Registered: 09/11/11
Posts: 252
Loc: Kansas
Wow. Holy thread resurrection, Batman!! +1 on the Moto-rads
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2008 Silverado 1500 Z-71 4x4 - QSUD 5w-30 & P1
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#2425246 - 11/04/11 05:37 PM Re: What is best thermostat brand ? [Re: MetalSlug]
EricF Offline


Registered: 07/14/09
Posts: 1595
Loc: SF Bay Area
Motorad's are really good..

I have a robertshaw in my Ranger, it's been in there since 1998.
Got it at autozone of all places.
then autozone switched to the motorad failsafe, which personally is a great idea but it just didn't seem like a highly functional stat.. jmho

kragen's was selling robertshaw's under the Prestone name, I never got a chance to get a couple more.. they now have Gates, which I'm 100% fine with, they're Stants anyway.
_________________________
1993 Ford Ranger XLT 4.0L 4x4 (240k) 5W-30 Synpower
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#2426493 - 11/06/11 05:52 AM Re: What is best thermostat brand ? [Re: MetalSlug]
Char Baby Offline


Registered: 05/25/05
Posts: 7314
Loc: Rochester NY
Really, the only time I replaced a t-stat was for PM, not because of failure. But, when I have replace a thermostat, I have used both Robertshaw and SuperSTAT and both were identical to the OE that I replaced.
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#2426853 - 11/06/11 02:40 PM Re: What is best thermostat brand ? [Re: MetalSlug]
Drew99GT Offline


Registered: 10/11/02
Posts: 20745
Loc: Colorado Springs
Originally Posted By: MetalSlug
motorad any good ?


Motorad was no good in my Corolla; would never get to operating temp in cold weather.

http://www.bobistheoilguy.com/forums/ubb...rue#Post2080918

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#2426884 - 11/06/11 03:19 PM Re: What is best thermostat brand ? [Re: MetalSlug]
wrcsixeight Offline


Registered: 10/15/10
Posts: 1034
Loc: california
I've had a standard 2 1/8" Motorad in my LA318 for 13 months now. The jiggle valve made filling and burping the system a non issue compared to the Superstant, and it warms up at the same rate as the Superstants I always used previously.

The first time it opens, the temp gauge seems to rise a little higher before before falling quickly back to the expected reading.

Since I can drive with the engine cover off, and do so on occasion, I can feel the heat from the radiator, and know when the t stat opens and closes. This behavior seems to have changed with the motorad, as sometimes I get blasted with engine heat, then it abruptly stops for a while, then blasts the heat again. I remember the Superstant was more of a constant heat rather than an on and off thing, but memory is becoming more fickle as I age. I'd also gone from a brass/copper double 5/8" row radiator to a single 1 1/4" single row all aluminum radiator so a true comparison is not possible.
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#2427403 - 11/07/11 08:04 AM Re: What is best thermostat brand ? [Re: MetalSlug]
meep Offline


Registered: 02/20/07
Posts: 2497
Loc: Southeast
OEM chrysler out of the 03 T&C we just picked up was no better made than a stant. in fact, its failure was one of the legs on it snapped from the spring tension, warping the whole unit and allowing constant flow. rockauto sold me an ac delco for $5 and it went right in.

Someone above mentioned fluctuation--- I had that with a stant. Upgraded to a superstant and it was more constant.

I have done a couple of subaru t-stats... YES the oems always look beefier than aftermarket, BUT the 2 I've changed failed young at ~60k, and they failed CLOSED. I slapped a S-stant (i *think* it was an s-stant) in one of them (this is years ago, a 88 GL) and my buddy drove that car, leaking like a sieve, until maybe 6 years ago (he's in the navy). the stant lasted another 140k miles and 15 years.

That said, i think the plain stants are hit-and-miss off the shelf. Put one in a buddy's 1500 and returned it, and it's replacement, before going to NAPA (looked like a superstant) and got it right.

M


Edited by meep (11/07/11 08:04 AM)
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#2431573 - 11/11/11 07:34 AM Re: What is best thermostat brand ? [Re: MetalSlug]
rshaw125 Offline


Registered: 08/18/04
Posts: 2524
Loc: Raleigh ,NC CSA
Had a check engine light on my 2006 Explorer. Autozone said it was a low operating temperature. The temp gauge was running at about 1/3 to halfway. When warmed up it had been running at the exact halfway mark since I bought it new. Bought the Autozone Duralast replacement. I put it in with a new gasket/ o-ring and the old one looked very similar to the new. Now it's back to it's halfway mark on the temp gauge. We'll see which one lasts longer.
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#2431625 - 11/11/11 08:42 AM Re: What is best thermostat brand ? [Re: StevieC]
EricJRoy Offline


Registered: 06/15/10
Posts: 68
Loc: Buffalo, NY
Originally Posted By: StevieC
OEM and Failsafe if it's an option and not the default.



I had an annoying experience with the failsafe on my 96 4.0 Explorer. When I parked it at work, the failsafe opened far enough to lock open (designed that way). On the way home I had no heat, so I had to do the whole job again and buy another thermostat without the locking feature.

OEM is the best, the aftermarkets tend to cycle while driving: open close open close,
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#2431744 - 11/11/11 10:57 AM Re: What is best thermostat brand ? [Re: MetalSlug]
EricJRoy Offline


Registered: 06/15/10
Posts: 68
Loc: Buffalo, NY
^^I meant the open/closed cycle on aftermarket produces big swings on my temp gauage, it goes higher than half, then down to 1/4, and repeats
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#2433957 - 11/14/11 08:02 AM Re: What is best thermostat brand ? [Re: MetalSlug]
rslifkin Online   content


Registered: 06/27/10
Posts: 2218
Loc: Stamford, CT / Rochester, NY
^ Sounds like you've been getting bad ones, or need to drill a small hole in the t-stat to keep flow past the pellet more consistent. I've currently got a Stant superstat in the Jeep, and the gauge is solid and consistent once it's up to temp.
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#2433964 - 11/14/11 08:09 AM Re: What is best thermostat brand ? [Re: EricJRoy]
rshaw125 Offline


Registered: 08/18/04
Posts: 2524
Loc: Raleigh ,NC CSA
Originally Posted By: EricJRoy
^^I meant the open/closed cycle on aftermarket produces big swings on my temp gauage, it goes higher than half, then down to 1/4, and repeats


I have driven my 4.0 Explorer over 100 miles with it's new Duralast thermostat. Stays right at half way when warmed up. No up and down swings. Just as important no check engine light.


Edited by rshaw125 (11/14/11 08:10 AM)
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#2433998 - 11/14/11 08:57 AM Re: What is best thermostat brand ? [Re: Billed]
porcupine73 Offline


Registered: 10/06/05
Posts: 664
Loc: Buffalo, NY
Originally Posted By: Billed
Porcupine73,

Your photo speaks volumes; so I drove downtown to our Subaru dealer for a thermostat for my 2001 Outback 2.5. OUCH-----$42.23 before tax, at some point quality is just too expensive. Hope this one lasts the life of the car as it has 133k.


Hi Billed. I get the genuine Subaru thermostats online for about $20. Usually dealers will gouge you on walk-in sales.

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#2435967 - 11/16/11 01:07 AM Re: What is best thermostat brand ? [Re: MetalSlug]
ludey Offline


Registered: 01/07/08
Posts: 122
Loc: California, USA
My failsafe from Autozone is still going strong. It has been almost 3 yrs and 100K miles later since I installed it back in 12/30/2008. I still wished I had bought the OEM simply because the price of the OEM and Failsafe are similar in price. Couldn't wait for the dealership to order me one or wait for an online vendor to send me one. Needed it pronto!

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#2438111 - 11/18/11 09:59 AM Re: What is best thermostat brand ? [Re: MetalSlug]
440Magnum Offline


Registered: 02/01/09
Posts: 6344
Loc: Texas
Robertshaw USED to be the best, far and away. Robertshaw isn't a company anymore, and the design went to Mr. Gasket they still produce the Robertshaw design. But not the implementation, unfortunately. The last one I bought was so flimsy that I didn't even install it. I try to always go with Stant now.
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#2438525 - 11/18/11 06:17 PM Re: What is best thermostat brand ? [Re: MetalSlug]
HTSS_TR Offline


Registered: 04/17/06
Posts: 12902
Loc: Irvine, CA
Either OEM or Stant. My LS400 OEM thermostat lasted almost 200k miles, the replacement Stant is in the engine for more than 70-80k miles and still going strong.

Other cars have original thermostat.
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#2444732 - 11/25/11 05:15 PM Re: What is best thermostat brand ? [Re: MetalSlug]
kozanoglu Offline


Registered: 09/10/11
Posts: 236
Loc: Milwaukee
Kuzeh served me well.

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#2450610 - 12/01/11 10:33 PM Re: What is best thermostat brand ? [Re: 440Magnum]
Rock_Hudstone Offline


Registered: 11/13/07
Posts: 1067
Loc: New Jersey
Just replaced the original T-stat in a friends '95 Olds Cutlass w/3.1 engine, 245,000 miles, coolant flushed every 36,000 miles, failed open. I wanted an AC-Delco replacement but the $25+ tax dealer price was too much.

Went with the Super-Stant, $10.99 at AAP. Made in U.S.A. very similar build to the original, 500 miles later working just fine. I've had good luck with Super-Stats on GM vehicles in the past as well.

Also, if the Stant T-stat ever fails prematurely my local Advance Auto will exchange or refund no (or minimal) questions asked. Good luck trying to get the dealer to take back a used part.

Delco:

http://www.amazon.com/ACDelco-131-124-Thermostat/dp/compatibility-chart/B000C9C00W



Stant:

http://www.amazon.com/Stant-45899-SuperStat-Thermostat-Fahrenheit/dp/B000C80AH8

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#2450788 - 12/02/11 08:47 AM Re: What is best thermostat brand ? [Re: Rock_Hudstone]
oldmaninsc Offline


Registered: 09/25/06
Posts: 1227
Loc: California
Last spring - I replaced the Super Stant thermostat in my Mercury with a Motorcraft thermostat. The heater seems to warm up quicker, but coming down long hills (think the Grapevine or Southern Oregon) the temperature gauge would dip down about 25 percent or so. With the Super Stant thermostat the temp. gauge would stay steady at the half way point under all conditions.
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#2452044 - 12/03/11 03:15 PM Re: What is best thermostat brand ? [Re: MetalSlug]
jh1 Offline


Registered: 06/02/09
Posts: 3
Loc: ND
I just replaced my thermostat in my F150. I picked up the premium one at NAPA, part number 555090 because it was $10 less than picking up the Motorcraft at the Ford dealer. The box has Superstat on it, and made by Stant. Well, I open the box up, and the thermostat is stamped Motorcraft with part number 8575. It looked the same as the Motorcraft that I took out. So, it looks like Stant is a supplier for Motorcraft.

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