Bob Bondurant School -- Corvette Oil Selection

[dailydriver]

Originally Posted By: rpn453
I noticed they used the Michelin Pilot Sport PS2 on the ZR-1s there. I guess Goodyear doesn't make a tire that size?


That's the standard, OEM tire for that car.

IMHO it should come with at least the Pilot Cups though, in order to be on even tire terms with the Euro/Nippon 'supercars' to which it is always compared. (Quickly wearing, sticky replacement tire costs be D****D!!)

 

[tealz]

That's what I still do not understand and I hope someone can explain it. But why is it that Mercedes, ferrari, and other exotic that go through extensive engineering use thick oil weights at least 40+ while American cars use the thinnest stuff possible as their "recommend" factory fill? Another example is the LS1 engine for the US calls for 5w30 while the same engine in the Holden platform in Australia recommends 20w50? On the Aussie forums some use 10w60, 15w50, 20w50 and so on. Why is this??

 

[Clevy]

CAFE laws

 

[tig1]

Originally Posted By: Clevy
CAFE laws


I used Mobil 1 5w20 in 1978 when CAFE was a place to eat.

 

[dailydriver]

Originally Posted By: tig1
Originally Posted By: Clevy
CAFE laws


I used Mobil 1 5w20 in 1978 when CAFE was a place to eat.



They made a 5W-20 waaayyy back then??!!

 

[Johnny]

Originally Posted By: dailydriver
Originally Posted By: tig1
Originally Posted By: Clevy
CAFE laws


I used Mobil 1 5w20 in 1978 when CAFE was a place to eat.



They made a 5W-20 waaayyy back then??!!


Yes sir. When Mobil 1 first came to market is was a 5W-20. And don't tell me it won't stand up to heat. I ran it in my R100 BMW cycle for a little over 100K.

The prototype cars that run in the 24-Hours of Daytona could care less about CAFE standards, and most of them use Mobil 1 5w30.

Matt, thanks for the report.

 

[jaj]

The Zen of oil selection: they run what they run because it works for them. There are other oils that would work just as well, but they don't use them.

The 15w-50 is a great oil, but my personal experience of high vis oils on the track is that they increase the oil and coolant temperatures. The notion of "thicker oils handle heat better" is a bit backwards: "thicker oils create more heat, thinner oils run cooler"

My preference is to run the lowest viscosity that keeps the moving parts apart - the engine will run cooler that way.

 

[TenSecondZ2]

Originally Posted By: Johnny
Originally Posted By: dailydriver
Originally Posted By: tig1
Originally Posted By: Clevy
CAFE laws


I used Mobil 1 5w20 in 1978 when CAFE was a place to eat.



They made a 5W-20 waaayyy back then??!!


Yes sir. When Mobil 1 first came to market is was a 5W-20. And don't tell me it won't stand up to heat. I ran it in my R100 BMW cycle for a little over 100K.

The prototype cars that run in the 24-Hours of Daytona could care less about CAFE standards, and most of them use Mobil 1 5w30.

Matt, thanks for the report.


Johnny, I was in the pit of a Daytona Prototype and I saw a case of Mobil 1 15w50. Even took a picture of it! This team was running an ECR Chevy Engine. Maybe lighter oils in the non push rod engines?

 

[TenSecondZ2]

Quote:

The prototype cars that run in the 24-Hours of Daytona could care less about CAFE standards, and most of them use Mobil 1 5w30.
Quote:


Johnny, I was in the pit of a Daytona Prototype and I saw a case of Mobil 1 15w50. Even took a picture of it! This team was running an ECR Chevy Engine. Maybe lighter oils in the non push rod engines?