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Mobil 0w40 good enough for a race car #4443495
06/28/17 06:45 AM
06/28/17 06:45 AM
Joined: Aug 2014
Posts: 5
NY, NY
junkyard_sal Offline OP
junkyard_sal  Offline OP
Joined: Aug 2014
Posts: 5
NY, NY
I have a BMW e36 M3 race car. Would the members of this forum feel comfortable running Mobil 1 0w40 European formula in a racecar?

The alternative is Redline racing 40w which I believe is a 15w40.

Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443504
06/28/17 06:53 AM
06/28/17 06:53 AM
Joined: Jan 2016
Posts: 849
NC
Vladiator Offline
Vladiator  Offline
Joined: Jan 2016
Posts: 849
NC
For a racecar I vote for Valvoline 5w40 MST. Available at AAP for good prices, and will take all the abuse you throw at it. M1 0w40 becomes a 30w real quick.

Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443519
06/28/17 07:07 AM
06/28/17 07:07 AM
Joined: May 2010
Posts: 1,125
Ocala, Florida
racin4ds Offline
racin4ds  Offline
Joined: May 2010
Posts: 1,125
Ocala, Florida
Years ago when I worked for PTG (North American BMW Race Team for ALMS) we ran Castrol 0W40 right off the shelf. I'd think M1 0W40 would be up to the task, its a stout oil and the only M1 oil I will use.


Just say NO to thin oils and M1!
05 F350 Powerstroke
05 Hyundai Tucson
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Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443522
06/28/17 07:14 AM
06/28/17 07:14 AM
Joined: Dec 2013
Posts: 2,098
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,098
socal
Are you changing the oil after every race? The redline racings looks like it would fit good in your application


06 Cadillac Escalade Ext
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Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443539
06/28/17 07:32 AM
06/28/17 07:32 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
Oil chemistry is compromised for LL application. I would use something else.

Is the exhaust open with no catalyst?

what motorsport?


2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443541
06/28/17 07:35 AM
06/28/17 07:35 AM
Joined: Sep 2010
Posts: 7,493
Texas & Global
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 7,493
Texas & Global
Why not 15w50 ?


2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
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Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443547
06/28/17 07:40 AM
06/28/17 07:40 AM
Joined: Nov 2012
Posts: 234
NorCal
Seventh Offline
Seventh  Offline
Joined: Nov 2012
Posts: 234
NorCal
E36 m3 was built before LL-01 was a thing. LL-98 was the spec for those cars originally. The factory oil we put in those was 15w-40.

LL-98 spec is tough to find these days, but I do know that Motul x-cess 5w-40 used to meet the spec, per the 5 year old bottle on my shelf in the garage. Not sure it still does tho.

I wouldn't hesitate to use M1 in that. It is up to the task. Pretty much any 40wt synthetic will be acceptable imho.

Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443552
06/28/17 07:52 AM
06/28/17 07:52 AM
Joined: Jun 2016
Posts: 3,566
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 3,566
MN
Originally Posted By: junkyard_sal
I have a BMW e36 M3 race car. Would the members of this forum feel comfortable running Mobil 1 0w40 European formula in a racecar?

The alternative is Redline racing 40w which I believe is a 15w40.


It depends on how long the race is. M1 0w40 has a reputation for shearing down in viscosity from breaking the VII additives. No endurance racing then. Anything over an hour and I'd go for Castrol Edge 0w40 if you need that extra bit of horsepower on the ground, and Mobil1 15w50 or Redline 40 if you don't mind the slight horsepower loss from using thicker oil, yet want your engine to be more reliable.

Tradeoff: More HP to win, then use Castrol Edge 0w40.
More insurance on durability: Go with the thicker HTHS synthetics.
Whatever your priorities are.
And only use M1 0w40 if the race is an hour or less.

Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443554
06/28/17 07:55 AM
06/28/17 07:55 AM
Joined: Apr 2010
Posts: 13,537
Chicago, IL
dparm Offline
dparm  Offline
Joined: Apr 2010
Posts: 13,537
Chicago, IL
Originally Posted By: junkyard_sal
I have a BMW e36 M3 race car. Would the members of this forum feel comfortable running Mobil 1 0w40 European formula in a racecar?

The alternative is Redline racing 40w which I believe is a 15w40.





The term "racecar" is pretty vague. What kind of racing? How modified is the engine? What kind of tracks will it see? How often will it get raced? etc.


2017 Chevrolet Corvette Grand Sport
Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443570
06/28/17 08:16 AM
06/28/17 08:16 AM
Joined: Jan 2008
Posts: 1,022
TX
robertcope Offline
robertcope  Offline
Joined: Jan 2008
Posts: 1,022
TX
In the past, we've talked about professional race teams at major races using M1 0W-40 in their motors. So, yes, it would seem that it is up to the task for a race car. I've used it in my track cars, as well, without any issues that I know of.

Re: Mobil 0w40 good enough for a race car [Re: oil_film_movies] #4443591
06/28/17 08:30 AM
06/28/17 08:30 AM
Joined: Aug 2014
Posts: 5
NY, NY
junkyard_sal Offline OP
junkyard_sal  Offline OP
Joined: Aug 2014
Posts: 5
NY, NY
Most of the races are half an hour sprints with an occasional 1 hour "enduro" We run Redline 40W racing in the enduro cars that do 12 hour runs and we change the oil nightly. I change my oil every ten hours.

The exhaust is open, no cats.

Re: Mobil 0w40 good enough for a race car [Re: dparm] #4443593
06/28/17 08:33 AM
06/28/17 08:33 AM
Joined: Aug 2014
Posts: 5
NY, NY
junkyard_sal Offline OP
junkyard_sal  Offline OP
Joined: Aug 2014
Posts: 5
NY, NY
In my class the engine is stock except for a cold air intake, removal of emissions devices (like the startup air pump), and a no cat 3" exhaust. The car will rev to 7000 but I have a 7 quart oil pan and an oil cooler that keeps temps well in line, normally 215-225F unless I am in traffic in which case I need to run the fan to force more air through the radiators but that is more for coolant temps than oil temps.

Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443612
06/28/17 08:51 AM
06/28/17 08:51 AM
Joined: Jun 2014
Posts: 1,949
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,949
Ca.
Ilmor engineering recommends M1 0w-40 for my 710 marine engine.

Operationally it spends most running hours in 2 conditions idling (in and out of marinas)or running between 4-6K for hours on end.

Change at 20 hours.

UD



Last edited by UncleDave; 06/28/17 08:52 AM.

Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Mobil 0w40 good enough for a race car [Re: junkyard_sal] #4443668
06/28/17 09:41 AM
06/28/17 09:41 AM
Joined: Nov 2005
Posts: 3,247
FL
mcrn Offline
mcrn  Offline
Joined: Nov 2005
Posts: 3,247
FL
Do you know your oil temps and pressures?


2012 Nissan Rogue
Re: Mobil 0w40 good enough for a race car [Re: mcrn] #4443731
06/28/17 10:21 AM
06/28/17 10:21 AM
Joined: Apr 2005
Posts: 737
Austin Texas
Mitch Alsup Offline
Mitch Alsup  Offline
Joined: Apr 2005
Posts: 737
Austin Texas
Originally Posted By: mcrn
Do you know your oil temps and pressures?


This !

If the oil temps stay under 250F then xxW-40 is good. If they get any higher I would go to xxW-50.

But for racing, I find better shear resistance from Ester base stock oils than PAO base oils. Not much, but a little.
You are going to want 1100-1400 ppm of ZDDP to protect the finger followers.

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