Motor oil

[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

[Salvatore]

Looks to be making good power!

[YENKO DEUCE REGISTRY]

[ QUOTE ]
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

[/ QUOTE ]

Found Rotella T at my local Wal-Mart, it has the rating that Verne listed above - it's going in the Deuce tonight!

[tirebird]

Norm, you're right about most of the Mobil 1 blends but the 15w50 Mobil 1 still has the old formula containing the higher(than today's) levels of zinc and phosphorus. Here's the information from Mobil 1's Product Data Sheet.
"Mobil 1 Extended Performance 15W-50 is formulated to provide outstanding engine protection for high performance engines and for consumers who want a higher viscosity oil and higher anti-wear performance ( ZDDP) than typically required by modern vehicles."

[Salvatore]

Has anybody used/tried the Joe Gibbs oil? I heard it is REAL good.