Originally Posted by hold
he also claims zinc is absolutely not need to run a solid lifter flat tappet ,,,he explains that most of the oil is designed to Not put Additives in it,,wen u do u delute it,do not put additives in ur oil he says,,an he is not gettin paid to write his stuff,he tests oil.
Absolutely wrong answer about zinc not needed...!
A thousand other highly paid expert oil scientists and race engine builders will angrily argue with that notion forever!
I also have personal experience and history with numerous flat tappet engine failures within minutes of fire-up and break-in from guys who put the wrong oil in and didn't know the difference.
HOWEVER... it does no good to put the ZDDP additives in a high detergent shelf oil, because the detergents will neutralize and filter out all the ZDDP benefits, just like it's suppose to do to protect catalytic converter street engines...! Were talking the difference between apples and oranges here...!
Sorry but I am sticking to my high level of ZDDP RACING OIL in all my race engines... ;O)