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Stant Superstat vs OEM #4522337
09/21/17 03:10 PM
09/21/17 03:10 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
I usually like OEM thermostats. My Explorer never runs at the right temperature. Never hot, but 1/4-1/2 zone. Moves around, and the dash gauge is accurate. ECT says low 170s to mid 180s, so it follows the scan tool. In essence I'm running a 180 stat. Many cooling parts were changed over the years, the green coolant is on a 3 year change interval. 4.0 OHV engines have weird cooling, there is no bypass. Running cooler is good and bad, less wear and tear on the engine but probably more fuel used.

It will never enter the thermometer icon, which is 190-200. Ford stat is supposed to be a 192. Seems the 4.0 had a few temperatures in the 190 range and it was consolidated to one part number.

I'm thinking of trying a superstat, 195F. Says it uses a design that keeps a constant temperature. The Ford stat has a bleed hole. Superstat has the v notch.

It its cheap, under $10 for the stat and gasket, but still it has to be drained and burped.

Any good feedback on Stant stats?


95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: ford46guy] #4522344
09/21/17 03:17 PM
09/21/17 03:17 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,278
WI
I've researched the heck out of all the brands and it seems like the best bet is the factory ones, or figure out who made the Motorcraft ones. Everything else you can find success stories and enough disaster stories to make you think.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Stant Superstat vs OEM [Re: HoosierJeeper] #4522348
09/21/17 03:26 PM
09/21/17 03:26 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
Originally Posted By: HoosierJeeper
I've researched the heck out of all the brands and it seems like the best bet is the factory ones, or figure out who made the Motorcraft ones. Everything else you can find success stories and enough disaster stories to make you think.

I believe it is made by Mahle. Made in Germany (not a suprise, so was the engine).


95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: ford46guy] #4522350
09/21/17 03:26 PM
09/21/17 03:26 PM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
I had a 93 explorer who's coolant was similar to what you're having. Granted this was the OHV 4.0 versus SOHC but I switched it with a MC, no change, switched it out with a motorad fail safe and it made a difference. If I remember correctly the operating temp for those engines were 195 and the motorad was 198. Maybe it was the 3 degrees but never the less I would consider motorad. I also replaced one on an old equinox with the delco and it was made by motorad. Not sure who is making MCs lately.

Question, what is the ratio you have on the green coolant? More coolant usually results in lower temps. If the thermostat doesn't work you might want to try doing a 60/40 distilled/coolant


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: Stant Superstat vs OEM [Re: ford46guy] #4522361
09/21/17 03:38 PM
09/21/17 03:38 PM
Joined: Apr 2013
Posts: 2,327
The Northeast
mclasser Offline
mclasser  Offline
Joined: Apr 2013
Posts: 2,327
The Northeast
You said you changed many cooling parts over the years. Did you change the t-stat?


2018 Hyundai Elantra VE -- 4K
2013 Honda Pilot EX-L 4WD -- 56K
2002 Honda Accord EX-L -- 211K

Re: Stant Superstat vs OEM [Re: Bgallagher] #4522362
09/21/17 03:40 PM
09/21/17 03:40 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
Originally Posted By: Bgallagher
I had a 93 explorer who's coolant was similar to what you're having. Granted this was the OHV 4.0 versus SOHC but I switched it with a MC, no change, switched it out with a motorad fail safe and it made a difference. If I remember correctly the operating temp for those engines were 195 and the motorad was 198. Maybe it was the 3 degrees but never the less I would consider motorad. I also replaced one on an old equinox with the delco and it was made by motorad. Not sure who is making MCs lately.

Question, what is the ratio you have on the green coolant? More coolant usually results in lower temps. If the thermostat doesn't work you might want to try doing a 60/40 distilled/coolant


Around 50/50, but I can check with a tester. The issue is more with needle movement.


95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: mclasser] #4522368
09/21/17 03:43 PM
09/21/17 03:43 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
Originally Posted By: mclasser
You said you changed many cooling parts over the years. Did you change the t-stat?

Yes, twice, once on a warranty for a waterpump and another I did myself. Both Ford parts. But I kinda accepted that it should move around, according to a Ford Service dept I asked. They told me some cars will move open loop temperature into the center. That could be 165.

Last edited by ford46guy; 09/21/17 03:43 PM.

95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: ford46guy] #4522395
09/21/17 04:19 PM
09/21/17 04:19 PM
Joined: Feb 2007
Posts: 2,378
Chicago IL USA
scurvy Offline
scurvy  Offline
Joined: Feb 2007
Posts: 2,378
Chicago IL USA
I used a Stant superstat in my Golf for the past 6 years. It solved my OEM thermostat being lazy (staying open) problem but eventually itself got lazy and wouldn't open enough. Replaced it with an OE Mahle when I replaced the radiator this spring. A body shop refilled the cooling system with Dex-Cool (without my permission) and the radiator started spouting leaks a year later.

For $10, it's worth a shot. Worked ok for me for as long as the OEM thermostat did.

FWIW I monitor the actual coolant temperature with a ScanGauge II. VW programs the idiot gauge in the dash to read straight up 90C between 75C & 115C


You are entitled to your own opinion but not your own facts.

06 VW Golf TDI: Shell Rotella T6 5w40, HU726/2x, EaBP90
12 Mazda 5: Castrol Edge 0w20, FL910s
Re: Stant Superstat vs OEM [Re: ford46guy] #4522405
09/21/17 04:30 PM
09/21/17 04:30 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
I looked up that Behr/Mahle Brand and tons of BMW owners have similar issues with running cold. Guess that answers it. The markings on the Ford Stat are definitely that brand. Maybe it is better to fail on the cold side. Probably going to leave it alone.

I went through three behr / mahl thermostats. The last one lasted less than 5k miles before I started getting a car that would sound like yours is acting. I'm not alone, there are numerous threads of people like me that needed to change them out at oil change intervals. I drive mine through winter/dd and if I was coming down the mountains in the cold it would drop down to the left dramatically.


95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: ford46guy] #4522406
09/21/17 04:31 PM
09/21/17 04:31 PM
Joined: Mar 2017
Posts: 569
West Ma.
rollinpete Offline
rollinpete  Offline
Joined: Mar 2017
Posts: 569
West Ma.
I had some problems before, this one works for me, it stays around 190ish
#45369 stant
https://shop.advanceautoparts.com/p/stan...83-P&c3apid


Pete.
97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive184k miles
Last Change;
Penn. Plat. HM. 5w30
Fram xg8a, Fram CA8141

I like my oil (slippery).

Re: Stant Superstat vs OEM [Re: ford46guy] #4522408
09/21/17 04:33 PM
09/21/17 04:33 PM
Joined: Jan 2017
Posts: 1,139
USA
ArcticDriver Offline
ArcticDriver  Offline
Joined: Jan 2017
Posts: 1,139
USA
Originally Posted By: ford46guy
I usually like OEM thermostats.

I'm thinking of trying a superstat, 195F. Says it uses a design that keeps a constant temperature. The Ford stat has a bleed hole. Superstat has the v notch.



A design that keeps a constant temperature? Aren't they all designed that way?

I stick with Motorcraft since too many others failed prematurely.


Multiple Diesel and Gasoline vehicles
Re: Stant Superstat vs OEM [Re: rollinpete] #4522415
09/21/17 04:41 PM
09/21/17 04:41 PM
Joined: Jun 2013
Posts: 525
Albany, NY
ford46guy Offline OP
ford46guy  Offline OP
Joined: Jun 2013
Posts: 525
Albany, NY
Originally Posted By: rollinpete
I had some problems before, this one works for me, it stays around 190ish
#45369 stant
https://shop.advanceautoparts.com/p/stan...83-P&c3apid


Yup, that is what I have in my order cart, but the debate is using an aftermarket stat. Does you temp needle stay put?

Last edited by ford46guy; 09/21/17 04:41 PM.

95 Tbird V8 240K PP SYNTH ULTRA 5W30
98 MGM 160K M1 HM 5W20
96 Explorer EB V6 159K PP SYNTH HM 5W30
95 Conti 155K MC 5W20
11 GS350 90K PP HM 5W30
Re: Stant Superstat vs OEM [Re: ford46guy] #4522421
09/21/17 04:47 PM
09/21/17 04:47 PM
Joined: Mar 2017
Posts: 569
West Ma.
rollinpete Offline
rollinpete  Offline
Joined: Mar 2017
Posts: 569
West Ma.
Originally Posted By: ford46guy
Originally Posted By: rollinpete
I had some problems before, this one works for me, it stays around 190ish
#45369 stant
https://shop.advanceautoparts.com/p/stan...83-P&c3apid


Yup, that is what I have in my order cart, but the debate is using an aftermarket stat. Does you temp needle stay put?


mine stays the same winter, summer, with ac on or off but I don't have an automatic which could alter the temp...


Pete.
97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive184k miles
Last Change;
Penn. Plat. HM. 5w30
Fram xg8a, Fram CA8141

I like my oil (slippery).

Re: Stant Superstat vs OEM [Re: ford46guy] #4522566
09/21/17 07:36 PM
09/21/17 07:36 PM
Joined: Jan 2017
Posts: 1,139
USA
ArcticDriver Offline
ArcticDriver  Offline
Joined: Jan 2017
Posts: 1,139
USA
Originally Posted By: ford46guy
Originally Posted By: rollinpete
I had some problems before, this one works for me, it stays around 190ish
#45369 stant
https://shop.advanceautoparts.com/p/stan...83-P&c3apid


Yup, that is what I have in my order cart, but the debate is using an aftermarket stat. Does you temp needle stay put?


I don't understand the importance you give to a steady temp needle.

Why does it matter as long as the engine temp stays within the range of design operating temp?


Multiple Diesel and Gasoline vehicles
Re: Stant Superstat vs OEM [Re: ford46guy] #4522570
09/21/17 07:39 PM
09/21/17 07:39 PM
Joined: Jan 2008
Posts: 10,666
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,666
OH
Normally I'm 100% oem for t-stats. But after reading some of the posts in this thread including yours I think it might be a good idea to try a different one and see how you like it. Then report back on here with your findings. Thank you.

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