Zinc additive?

[dadsbee]

The ZDDP may have been lowered a bit, but the big thing was they had to drop the SM rating on it, because it has ZDDP in it. I used to use Brad Penn or Penn Grade as well. It just got too difficult to come by and expensive.

As easy to get as a mouse click, out of London, and mine was here the next day.. https://performanceunlimited.ca/search.php?search_query=penngrade&section=product