using oil that's not specified for vehicle

[4WD]

Yep - 10 years ago everything I bought showed I could use 5w30 or 10w30 (guess what I picked).
Now it's 5w30 done deal.

 

[BrocLuno]

It's my car or truck and it gets what I want to put in it ... Done deal.

 

[ammolab]

I used Mobil 1 15W-50 in my 1990 Dakota (V6) and 1995 Dakota (V8) work trucks hauling ammo to gun shows every weekend. Bed loaded to capacity and a full trailer...maybe 5000+ pounds total. Both trucks went over 150,000 miles with one U joint the only casualty....except for my BACK!!!

 

[4WD]

However - some buy at 100k and Im done at 100k ... give to a son etc
(I travel a bunch so the 1st 100k is best for wife).

 

[FZ1]

Originally Posted By: car51
So I was doing some reading way back on BITOG. Surprised to see members like FrankN4 used M1 15w50 in about everything. Don't think I'd do that on my 2 cars. Anyone here using a heavier oil than what's specified by manufacturer?
Before moving to a non spec heavier oil look for a "thick" oil within the spec grade. Castrol seems to trend to the thick side of 0w-20 for example.

 

[Nick1994]

0w30 in the Camry that calls for 5w30

 

[Shrubitup]

I use 5W20 in my 16 Accord because I bought a ton of it for the 10 Civic. Spec say 0W20. There ain't no hard winter here. Maybe 25F. 5W will be just fine.

 

[Nickdfresh]

Originally Posted By: FordCapriDriver
M1 15w50 has always been a great oil but i would only use it in an engine specified for 20w50.


I used it once like 20-years ago or so in a 1987 Honda Accord (in summer or course). I actually got great mileage out of it driving long distance on a trip...

 

[53' Stude]

I'm debating on using the M1 EP 0w20 or going with maxlife synthetic 0w20

 

[Nickdfresh]

Someone said they had good results running a 0W-20 in a Saturn SL calling for 5w30 and a car in which many opted for 10W/15W-40...

 

[53' Stude]

Nick: was it possibly this gentleman?

https://bobistheoilguy.com/forums/ubbthreads.php/topics/688641/Re:_M1_0w-20_+_K&N_+_9

 

[Jetronic]

Originally Posted By: car51
So I was doing some reading way back on BITOG. Surprised to see members like FrankN4 used M1 15w50 in about everything. Don't think I'd do that on my 2 cars. Anyone here using a heavier oil than what's specified by manufacturer?


Me.

And with more additives than required.

Specced oil is basically an ACEA C2 oil with Noack under 10%, I use a thin MB 229.5 oil (also with noack under 10%)

 

[Jetronic]

Originally Posted By: FordCapriDriver
M1 15w50 has always been a great oil but i would only use it in an engine specified for 20w50.


I'd use it in an engine speccing SAE 40.

 

[rrounds]

And here is a guy that uses M1 0/50 race oil and 0/20 AFE in a 50/50 mix. He swears by it
https://bobistheoilguy.com/forums/ubbthreads.php/topics/2334500/M1_Special_Mix#Post2334500

ROD

 

[Camprunner]

I ran M1 15w50 in a Pontaic Fiero V6 back in the 80's and it ran great! Called for 5w30.

I know a guy who had a full size ford van with a triton v10 that only ran M1 15w50 he had 425,000 miles when he sold it.

I have run M1 FS 0w40 in my 2012 V6 Nissan Pathfinder and it ran fine. It seems the Nissan VQ40 DE V6 seems to like 40 weight oil there are many on Nissan forums that run a 40 when a 30 is specified. I recently talked to a guy that had 200K on his 4.0 Nissan Xtera running only Valvoline conventional 10W40.

 

[andyd]

The 528e spec oil is 20w50 . I'm chust following orrdhers
"If you don't think too good, don't think too much." Tom Magliozzi Car Talk.