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#2472506 - 12/25/11 11:09 AM thickest oil in 5w30 or 10w30
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Hey guys MERRY CHRISTMAS!!!! So I did another piston soak. Definetly the best one yet and probably the last for awhile I will be changing the oil tomorrow. Which oil should I use . I want an oil on the thicker side of the 5w30 or 10w30 scale. Maybe a 5w40 is a good idea? Whatever you guys recommend. I am currently using a quart of 5w30 with 1/2 quart motor honey at about 800 miles per quart little higher if no hwy drives and a little worse if I do mostly hwy. The motor honey seemed to make a big difference in how much oil it used on the hwy. Pretty impressed by it really. So let me know what yall think! Thanks guys
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2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2472511 - 12/25/11 11:14 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
bodeh6 Offline


Registered: 12/22/09
Posts: 615
Loc: Metro Detroit, MI
German Castrol 0W-30 is one of the thickest 30 weight oils.
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06' Subaru Legacy 2.5i 88K+ Miles
M1 HM 5W-30/OEM Filter

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#2472514 - 12/25/11 11:21 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
dave123 Offline


Registered: 01/13/09
Posts: 1022
Loc: wi
GC if it can be found check your Autozone
M1 HM might be a good choice also.


Edited by dave123 (12/25/11 11:24 AM)

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#2472531 - 12/25/11 11:48 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Brenden Offline


Registered: 03/03/10
Posts: 2329
Loc: Mn
Motor Honey is going to thicken anything you put in there by nearly a whole grade, just put in regular 5w30 if you are going to spike it with some VI improver, or skip the motor honey and put in 10-40 or 5-40 that's basically what you had after adding 1/2 quart of motor honey.


Edited by Brenden (12/25/11 11:51 AM)
_________________________
1992 BMW 325i M50b25 153k
M1 0w40/Mann

1991 Acura Integra - B18b swap
PP 5w30/Fram Ultra

1995 Honda Civic - Built B17A1
Amsoil SAE30 (break in)

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#2472562 - 12/25/11 12:48 PM Re: thickest oil in 5w30 or 10w30 [Re: Brenden]
Smokefan1977 Offline


Registered: 07/05/11
Posts: 674
Loc: Gilbert, AZ
Red Line 5-30 3.8

VI's do nothing but thicken oil and water down the additive package


Edited by Smokefan1977 (12/25/11 12:56 PM)
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2000 F350 7.3 4X4- Highly modded. Redline 15-40
99 F150 2wd. Mobil 0-40 MC820S
07 F150 2wd. Ultra 5-30 or Redline MC820S

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#2472578 - 12/25/11 01:07 PM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Clevy Offline


Registered: 11/11/10
Posts: 6516
Loc: Saskatoon canada
Motor honey did nothing but dilute a perfectly good add pack in the oil. Just go thicker. Since you are saying the motor acts better with motor honey in it go up to a 5w-40. Try the rotella t-6. It will go 10000 mikes easy in a gas engine and if your engine is higher mileage it will slow oil burning. It also retains it's viscosity better than most 5w-40 gasoline oils and is pretty cost effective
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2006 Charger RT
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#2472583 - 12/25/11 01:20 PM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
Well I will say this. When I had 10w40 castrol gtx at any temp below 40 it would chatter on start up. But the motor honey and 5w30 hm Mobil super doesn't chatter. Not sure why it doesnt chatter with motor honey as thick as it is
_________________________
2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2472858 - 12/25/11 10:32 PM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Dakota1820 Offline
formerly chevyboy14


Registered: 04/28/11
Posts: 3894
Loc: missouri usa
So whats the German castrol look like I've never seen it . And why Is it thought of as better than the regular castrol
_________________________
2004 Honda civic vp -m1 5w30
1998 Saturn sl2 -mobil super 5000 5w30


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#2472863 - 12/25/11 10:39 PM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Exhaustgases Offline


Registered: 12/18/11
Posts: 19
Loc: kirkland, wa
The low number represents the base oil and the high number the viscosity index improver additive.

So to answer the question the 10W-30 is thicker.

And straight SAE 30 is the thicker oil, not 0W-30.


Edited by Exhaustgases (12/25/11 10:40 PM)

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#2472997 - 12/26/11 07:58 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
tommygunn Offline


Registered: 01/27/11
Posts: 2343
Loc: usa
Originally Posted By: chevyboy14
Well I will say this. When I had 10w40 castrol gtx at any temp below 40 it would chatter on start up. But the motor honey and 5w30 hm Mobil super doesn't chatter. Not sure why it doesnt chatter with motor honey as thick as it is


That Mobil Super has titanium and is some good stuff. It solved my morning chatter and the thicker versions of it should give better results than GTX.


Edited by tommygunn (12/26/11 08:00 AM)

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#2473046 - 12/26/11 08:55 AM Re: thickest oil in 5w30 or 10w30 [Re: tommygunn]
partspro Offline


Registered: 12/08/11
Posts: 168
Loc: MO, USA
I agree with Clevy, not a big fan of 'additives'. I always recommend Lucas Oil Additive if the customer really wants something. What you really need to consider is the trade off, quite cold starts or excessive VII that eventually shear and can gum up piston rings and other vital engine parts.

Another option could be to find a filter with a good anti-drain back valve. Simply changing brands of filter can substantially reduce cold start engine noise.

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#2473060 - 12/26/11 09:14 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Garak Offline


Registered: 12/05/09
Posts: 9856
Loc: Regina, Saskatchewan, Canada
Another option would be a dual-rated 10w-30 HDEO, like Mobil Super 1300, or something like that. They can be on the thick end of the scale.
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Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Wix 51358
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#2473069 - 12/26/11 09:25 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Char Baby Offline


Registered: 05/25/05
Posts: 6579
Loc: Rochester NY
Originally Posted By: chevyboy14
So whats the German castrol look like I've never seen it . And why Is it thought of as better than the regular castrol


German Castrol IS Castrol SynTec(made in
Germany) but, only comes in 0W30 grade. GC has some nicknames such as GC, SLX(IIRC, SLX was an older version labeled on the bottle). So, you'll have to look for the SynTec 0W30.

Why GC is/was considered better is that in 0W30 it's not Group III Synthetic(HydroCracked)dino motor oil, as are the other grades of SynTec, it is Group IV Synthetic motor oil which is considered my many to be "TRUE" synthetic. But, IDK if GC is a Group V(Ester) synthetic.

Also, it's this "HydroCracked" Group III synthetic oil made completely from conventional(dino)oil which is why(years ago) there was a Mobil vs Castrol law suit


Edited by Char Baby (12/26/11 09:36 AM)
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"The hurrier you are, the behinder you get!"

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#2473133 - 12/26/11 10:52 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
Char Baby Offline


Registered: 05/25/05
Posts: 6579
Loc: Rochester NY
In addition to my second paragraph...
I should have mentioned that Group IV synthetic oils are PAO...Poly-Alpha Olafins...Don't know if I spelled that right!
PAO's are designed in the LAB...I beleive!
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"The hurrier you are, the behinder you get!"

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#2473158 - 12/26/11 11:33 AM Re: thickest oil in 5w30 or 10w30 [Re: Dakota1820]
hominid7 Offline


Registered: 08/10/05
Posts: 1522
Loc: North Texas
Castrol GTX 10w30 is pretty beefy as far as traditional oils go. Likewise, their 5w30 is as well.
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Dan W.
2001 Mazda 626 ESV6

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