Quote:
Originally Posted by bobcowan
If you really want a synthetic, add the GM or or one of the cam company additives. |
I believe,
but I am not positive, that GM changed the formulation in their GM EOS when they temporarily discontinued it year before last and then reinstated it a little while later with a different number. I believe,
but I am not positive, that they significantly increased the detergent levels in their product (while pretty much keeping the
Zinc/Phos. levels as they were. You can undoubtedly find a VOS for it over on BobIsTheOilGuy. The only reason I don't have a definitive answer is because I have a case of the old stuff down in the basement. And you probably don't need it with BP anyway -- BP is really good stuff for solid flat tappets and the
Zinc/Phos. numbers are up where they should be. The old GM EOS looks like this:
