Recently talked to two racers/builders of Ford race-ready engines. Their comments
are relevant: What will you be doing with your car? Both favored Brad Penn and Joe Gibbs
oil. Interestingly enough, one favored 10-30 W Brad Penn-even for racing. These engines were recent build 351s and 427/428s. The Brad Penn site shows two lab tests and their own test for ZDDP levels-PPM ratings. The 10-30 Penn 1 was a bit higher in
zinc-phosphate. So a sub-thread on this subject is warranted: weight of
oil for use of the engine. Street vs race applications is definitely relevant as is age and type engine:
i.e. an original side-oiler 427 for example. In either case for a side-oiler Joe Gibbs
oil would probably be the best choice.
Early BMW motorcycle owners have been down part of this road: higher ZDDP oil is necessary because of engine design in the 60s-70s. (
Synthetic oil has caused problems with seals and O-rings.) Another topic for real concern is
levels of ethanol in gasoline: if our "government" decides on 15% ethanol or higher-
look for more rust-/related problems/ in the fuel -delivery systems. Not to mention inefficient performance levels with alcohol.
Marriott
Horizontally opposed flat twin old cycles
Auto Car-AC Cobra 67 title
"The current left coast government is creating more problems than it can fix"