dino oil and ZDDP additives ? anybody

Diesel oils have had a lot of the ZDDP pulled out of them because of cats on trucks now.

Might want to send a sample to blackstone to find out what's really in the oil for additives and go from there.

There is a lucas hot rod oil that is stupid heavy on Zn/Ph and requires only a couple ounces to adequately charge a 6 qt change.