Motor oil

[Salvatore]

Lets get back to this subject again. Forgot where it was posted before. Now that Rotella is watered down what is the best for our flat tappett cams and hydraulic lifter motors. Brad Penn, Joe Gibbs,Valvoline Racing etc, etc! Does anybody REALLY know?

[L30M20]

Brad Penn is 1st,Valvoline 2nd,don't know about Gibbs. C

[MosportGreen66]

Sam, we use Shell Brand in the Corvette. Has the best forumla, not water down at all.

[Mr.Nickey Nova]

Yes,i heard that Rotella is watered down a little, but the new Rotella still has enough zinc for our flat tappet cams.

[Mr. Chevy]

Go with Amsoil severe duty synthetic racing oil, 20W50..

Rich

[Norm reynolds]

Motor oil for Diesels still has zinc That is what every one I know is using right now for flat tappet cams
Now and DO NOT USE Mobil 1 It has been changed and is not as good as it once was I am now useing Valvoline

[Verne_Frantz]

Sam, The debates over the best oil for our old cars, especially those with solid lifters, can go on forever. Rather than debate over brand names, I think the rating is the only important thing to look for. Any oil with a CI-4 Plus or CJ-4 rating will contain the best additive package for our cars. That's the oil I'm running in the '62 and the oil I'll use for break-in of the new '09 when it's done.
Verne

[m22mike]

Good point Verne.
Mike

[Salvatore]

You are right Verne! Pete likes Brad Penn. If that is now better than Rotella I am going to start using it. like you said!

[Z28DZ]

I just had a discussion with the fellow that rebuilt the motor for my L72 '69. His recommendation for my needs (available at NAPA stores and not for use in catalytic equipped vehicles) is Valvoline Racing "Not Street Legal" 20w-50.

http://www.valvoline.com/pages/produ...asp?Product=94

ps - The engine dynoed at 519hp @ 6100rpm and 493fpt @ 4600 rpm