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Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: kschachn] #5004729
02/08/19 10:57 AM
02/08/19 10:57 AM
Joined: Oct 2004
Posts: 6,017
New Braunfels
Bryanccfshr Offline
Bryanccfshr  Offline

Joined: Oct 2004
Posts: 6,017
New Braunfels
Fuel dilution is a constant in this equation that may be mildly effected by ambient temperature slightly if at all in this driving scenario.For example the driving pattern stays the same, the fuel dilution would only vary based on ambient temperatures speeding up warmup time.
The recommendation of 0w40 is good, the oil will lose viscosity due to fuel dilution. Shearing, of 0w40 has become a meme(classsic sense of social meme) here based on the behavior of a older formulation of M1 0w40 that was energy conserving. I do t think their is enough current data on current formulations to say that they “shear” a grade any,ore, with modern D.I. engines fuel does a fine job of knocking things down a grade. I would run the least expensive 0w40 or even a 10w30 SN HDEO if the vehicle doesn’t require synthetics, due to the shorter OCI’s. The thing is I can usually find 0w49 deals that make it as inexpensive or less expensive than then10w30 hdeo.
Originally Posted by kschachn
Originally Posted by oil_film_movies
Using a 0w-40 would be called for here due to the fuel dilution. It shears & dilutes down to a 30 weight in no time at all, with some margin to work with. Your 7.87 cSt is a bit too low. Any brand of 0w40 will do fine. Note new Corvettes have gone to a 0w-40 dexos2, and you could use that one specifically, but really any 0w-40 would work here, as in the ones available at Walmart or Amazon.

Do all 0W-40 oils shear down, including Castrol 0W-40? How would you know? Has anyone ever posted a UOA here that conclusively discriminates between actual mechanical shear and fuel dilution?

Fuel dilution would be independent of the oil used, correct?


Last edited by Bryanccfshr; 02/08/19 10:58 AM.

2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: dnewton3] #5004763
02/08/19 11:43 AM
02/08/19 11:43 AM
Joined: Mar 2012
Posts: 1,188
WA
Brigadier Offline
Brigadier  Offline

Joined: Mar 2012
Posts: 1,188
WA
Originally Posted by dnewton3
welcome new member!

There is likely way more fuel than 2% in there.

You didn't post your wear metals, but we'll presume they are fine or you would have said otherwise.

Also, despite the heresy this suggestion will invoke, I recommend you just use conventional oil. 5k miles on M1 EP is a total waste of money. If the fuel dilution is going to drive you (pardon the pun) to shorter OCIs, then using any manner of synthetic oil is a utter waste of oil. Realizing the vehicle is still under OEM warranty for a little while, and you're not likely to extend your OCIs; just use inexpensive API approved dino oil and save yourself a ton of cash.



Show me a cheap conventional that is d1G2 approved, please. He is under warranty. Are you suggesting he ignore the OEM requirements?


2017 Hyundai Santa Fe SE, 3.3L, AWD, QSUD 5w30, OEM filter, Hy-per Lube ZRA

https://www.pure-gas.org/ << Wake up your engine!!

Where the stars and stripes and the eagle fly
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: kschachn] #5004788
02/08/19 12:10 PM
02/08/19 12:10 PM
Joined: Jun 2016
Posts: 4,279
MN
oil_film_movies Offline
oil_film_movies  Offline

Joined: Jun 2016
Posts: 4,279
MN
Originally Posted by oil_film_movies
Using a 0w-40 would be called for here due to the fuel dilution. It shears & dilutes down to a 30 weight in no time at all, with some margin to work with. Your 7.87 cSt is a bit too low. Any brand of 0w40 will do fine. Note new Corvettes have gone to a 0w-40 dexos2, and you could use that one specifically, but really any 0w-40 would work here, as in the ones available at Walmart or Amazon.
Originally Posted by kschachn
Do all 0W-40 oils shear down, including Castrol 0W-40?
Yes. All oils shear their VM to some extent.
Originally Posted by kschachn
How would you know?
It has been an issue with oils for a long time. To educate yourself, use a search engine, or https://www.api.org/~/media/Files/Certification/Engine-Oil-Diesel/Publications/4-Trends-in-Shear-Stability-of-Automotive-Engine-Oils.pdf would give you a good summary of the facts.
Originally Posted by kschachn
Has anyone ever posted a UOA here that conclusively discriminates between actual mechanical shear and fuel dilution?
Again, fuel dilution reduces viscosity, oxidation raises viscosity, and permanent shear reduces viscosity, and they all occur to some extent in used oil. All three occur. Its ridiculous for you to think exact component contributions are available. Fuel dilution presence, driving style, engine type, all contribute to oxidation rates and VM permanent shear.
Originally Posted by kschachn
Fuel dilution would be independent of the oil used, correct?
Fuel dilution creates an independent reduction in viscosity, one part of viscosity reduction. Obviously. Strange question.

Last edited by oil_film_movies; 02/08/19 12:10 PM.
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: oil_film_movies] #5004796
02/08/19 12:16 PM
02/08/19 12:16 PM
Joined: Dec 2005
Posts: 11,129
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 11,129
Upper Midwest
Why the snarky response? Good to see you are back from wherever you were those two months BTW. Why you have to throw in calling me ridiculous I'm not sure, I didn't think it was a particularly ridiculous question.

I do appreciate the presentation you listed, that is informative.


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 410K
2000 Toyota ECHO, 280K
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: kschachn] #5005409
02/09/19 02:53 AM
02/09/19 02:53 AM
Joined: Jun 2015
Posts: 418
montreal ,canada
madeej11 Offline
madeej11  Offline

Joined: Jun 2015
Posts: 418
montreal ,canada
Sometimes we reap what we sew.

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: madeej11] #5005442
02/09/19 04:29 AM
02/09/19 04:29 AM
Joined: Mar 2016
Posts: 1,263
CA
CharlieBauer Offline
CharlieBauer  Offline

Joined: Mar 2016
Posts: 1,263
CA
Originally Posted by madeej11
Sometimes we reap what we sew.


Agreed and not just for those who make garments.


It ain't what you don't know that gets you into trouble. It's what you know for sure that ain't so.

- mistakenly attributed to Mark Twain
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: madeej11] #5005466
02/09/19 06:53 AM
02/09/19 06:53 AM
Joined: Dec 2005
Posts: 11,129
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 11,129
Upper Midwest
Originally Posted by madeej11
Sometimes we reap what we sew

Is that sow?


1994 BMW 530i, 241K
1996 Honda Accord, 267K
1999 Toyota Sienna, 410K
2000 Toyota ECHO, 280K
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: kschachn] #5005513
02/09/19 08:20 AM
02/09/19 08:20 AM
Joined: Dec 2004
Posts: 10,661
1/2 hr N.E. of Detroit
Triple_Se7en Offline
Triple_Se7en  Offline

Joined: Dec 2004
Posts: 10,661
1/2 hr N.E. of Detroit
Sow is the correct spell & definition for that ancient saying..... "as you sow - so shall you reap"

A thicker 5W30 that meets D1-G2 and SN Plus is Quaker State Ultimate Durability.


19 Hyundai Santa Fe 2.4 GDI Castrol Edge 5w30 / NAPA Mann-Hummel Pro Select filter
04 Chev Colorado 3.5 QS / Valv syn 5w30 blend K&N filter
03 Chev Malibu 3.1 QS / Valv Syn 5w30 blend Fram EG filter
Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: M1Spartan] #5006255
02/09/19 10:10 PM
02/09/19 10:10 PM
Joined: Dec 2018
Posts: 391
Fort Worth
Pinoak Offline
Pinoak  Offline

Joined: Dec 2018
Posts: 391
Fort Worth
I agree with an earlier post. I'd just use conventional.
You could follow the old school way and change every 3k to 5k and just not need to worry. In you particular case that seems the best route to me.

Re: Mobil 1 EP 5w-30, 5,000 miles, Colorado 3.6L LFX [Re: kschachn] #5007548
02/11/19 01:18 AM
02/11/19 01:18 AM
Joined: Jun 2015
Posts: 418
montreal ,canada
madeej11 Offline
madeej11  Offline

Joined: Jun 2015
Posts: 418
montreal ,canada
Originally Posted by kschachn
Originally Posted by madeej11
Sometimes we reap what we sew

Is that sow?

Yes, won't blame typo. My blunder.

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