Any body running flat tappet cams might want to read the June issue of Hot
Rod magazine.According to the article oil manufactures have taken out zinc
and phosphorus additives. (ZDDP) With the elimination of this additive it
wipes out your cam and lifters.The only oil that has it is shell Rotella
T. Or you can buy a 4-ounce bottle of GM cam shaft and lifter prelube and
add with every oil change.Part number #PN 12345501 I think this is worth
reading. It might save you allot of money and heartache.....Dennis
