Posted by Ken Dunnington on Monday, October 08, 2007 at 11:22:17 :
In Reply to: Re: what is the best oil to run in ff pw? posted by mikeLIny on Sunday, October 07, 2007 at 22:11:45 :
"the newer oil is better for the older engines they say because of the flat tappat lifters"
I've read exactly opposite of this. Many newer oils have been having less and less zinc in them. The zinc content of the oil is extremely helpful in certain areas, one of which is the flat tappet/cam lobe interface.
New engines are roller tappet so they aren't affected and thus these low/zero zinc oils aren't a problem for these parts in the new engines.
Don't take this as gospel, just another angle to perhaps go find out more information on.
Ken
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