[RocktimusPryme]

Originally Posted by Aluminum Chief

I run diesel oil with a bottle of Comp Cams Break in additive every oil change.

Would that not be overkill? If you use a diesel oil that in theory already has sufficient additive for a flat tappet, and then add the external additive wouldn't that result in too much zinc?

When I was looking into this I seem to remember reading that an overabundance of zinc anti wear additive can backfire and actually create wear.