QUOTE(charliew @ Jun 3 2011, 02:59 PM)
In my flat tappet cam cars that are beaters I use rotella.
Hey Charliew,
I have a 914 V8 and the Chevy has a SMALLER area cam lobe than the 411 so I have foud that most brand oil + ANY ZDDP additive is a JOKE!
First off, in order to achieve the ZDDP protection, it MUST completely DISOLVE into solution in the oil.....many additives do NOT include the additive to make this happen.
2nd, this is an important issue: the AMOUNT of ZDDP needed to protect the extreme loads on the cam & lifter. Happily, the 411 valve train has MUCH larger
cam-lifter area than the Chevy.
In speaking with the Sales Manager for Brad Penn, the company is the re-birth of the old Kendall Oil Company and their oil includes high levels of SOLUABLE ZDDP
and a partial synthetic mixture. It is great at holding oil pressure at any temp.
The bottom line is that BRAD PENN is the GREAT BARGAIN at $5.25/Qt and offers all the protection you need!
Terryu