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I'll only offer up this...
When I was involved in Indy Cars I found out one rather interesting tidbit. The only oil that both Ilmor and Cosworth engine companies recommended was Mobil 1 - period.
Then when we ran with Infiniti engines the first half of 1997 in the IRL the only oil that Nissan said to run in the engines was Mobil 1.
We switched to the TWR/Oldsmobile (which were later rebadged as a Chevrolet) powerplants mid-season in 1997, and ran those into the year 2000. During that time we used two different engine builders - Speedway Engines in Indianapolis and Comptech in California - and both of them only recommended one oil, Mobil 1.
And all this regardless of if you had a competing major oil company sponsor (as we did at one point) or not. Often if you ran an oil other than Mobil 1 those engine companies were skeptical of any engine problems your team might have. On more than one occasion engine suppliers showed us the effects of running other oils in comparison to Mobil 1, and the differences in wear marks and patterns was dramatic.
Mind you, none of these companies were affiliated with Mobil 1 in any way, nor did they receive any sort of compensation from them. Each of the engine suppliers simply stated they had never found any other oil that performed as well, nor protected components as well, as Mobil 1 did.
Just FYI...
Needless to say, Mobil 1 is what I use in my CTS-V.
Dallara
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