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Re: SAE 30 vs 15w40 [Re: racin4ds] #4892355
10/09/18 09:49 PM
10/09/18 09:49 PM
Joined: Dec 2009
Posts: 25,634
Regina, Saskatchewan, Canada
Garak Online content
Garak  Online Content
Joined: Dec 2009
Posts: 25,634
Regina, Saskatchewan, Canada
Originally Posted by racin4ds
Except T6 5W40 is NOT a SAE30WT and is not the oil it used to be either... they have stripped a lot of the good stuff from it over the years to meet the dumb EPA/insert BS org.

Which can equally apply to API monogrades you see on the market....


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: SAE 30 vs 15w40 [Re: Warstud] #4893652
10/11/18 07:50 AM
10/11/18 07:50 AM
Joined: Mar 2015
Posts: 11,325
In the shop
53' Stude Offline
53' Stude  Offline
Joined: Mar 2015
Posts: 11,325
In the shop
Originally Posted by Warstud
Originally Posted by dlundblad
I realize SAE 30 is slightly harder to find


Walmart has Rotella T1...Rural King has 3 different brands of SAE30


Yep, Harvest King, Rotella and Mobil


09' Camry LE, 141,020 miles

PP 5w30 and TG 4967
Re: SAE 30 vs 15w40 [Re: dlundblad] #4894077
10/11/18 03:55 PM
10/11/18 03:55 PM
Joined: Aug 2003
Posts: 10,887
Buffalo, NY
JTK Offline
JTK  Offline
Joined: Aug 2003
Posts: 10,887
Buffalo, NY
SAE 30 doesn't shear?

Pretty sure a UOA would differ.


2017 Ram 1500 4x4, 3.6L. 2016 Nissan Quest SV (Babe magnet IV)
Re: SAE 30 vs 15w40 [Re: JTK] #4894090
10/11/18 04:24 PM
10/11/18 04:24 PM
Joined: Dec 2005
Posts: 10,048
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,048
Upper Midwest
Originally Posted by JTK
SAE 30 doesn't shear?

Pretty sure a UOA would differ.

I'm not sure how it could with such relatively short hydrocarbon chains. The VII molecules are huge in comparison and far more prone to cleaving from mechanical force.
Nearly every UOA on here cannot distinguish between fuel dilution and actual shear so that is what I think we see most of the time.


1994 BMW 530i, 231K
1996 Honda Accord, 263K
1999 Toyota Sienna, 402K
2000 Toyota ECHO, 272K
Re: SAE 30 vs 15w40 [Re: dlundblad] #4894553
10/12/18 09:47 AM
10/12/18 09:47 AM
Joined: Mar 2005
Posts: 1,104
Mobile, AL
Gilitar Offline
Gilitar  Offline
Joined: Mar 2005
Posts: 1,104
Mobile, AL
Mobil 1 15w50 in all my air cooled OPE.


2017 Honda CRV 2.4L
2018 Toyota Tacoma 3.5L
Re: SAE 30 vs 15w40 [Re: dlundblad] #4894561
10/12/18 09:55 AM
10/12/18 09:55 AM
Joined: Apr 2010
Posts: 4,476
Storrs, Connecticut
jeepman3071 Offline
jeepman3071  Offline
Joined: Apr 2010
Posts: 4,476
Storrs, Connecticut
Been using 15w40 for years now on both my own and customer machines with excellent results. Rotella, SuperTech, and Napa 15w40 have all worked well. The only exceptions are snowblowers which I use 0w30 or 5w30 in and generators which I use 5w40 in for easier starting in winter.


2000 Jeep Cherokee 4.0L (181k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (34k) - Castrol Edge Euro 0w40, MANN HU816X
Re: SAE 30 vs 15w40 [Re: dlundblad] #4895293
10/13/18 06:19 AM
10/13/18 06:19 AM
Joined: Sep 2013
Posts: 10,539
Indiana
dlundblad Offline OP
dlundblad  Offline OP
Joined: Sep 2013
Posts: 10,539
Indiana
We went to Rural King yesterday for the first time in 3 years as it's somewhat out of the way for us. I had forgotten how fun of a store it was. Baby chickens all the way to firearms.

I had to check out the oil section and saw they had various SAE 30's. When the time comes, I'll scoop some up. I'll most likely just use Rotella.


03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

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