quote:Originally posted by hrandy:
I understand that ZDDP, probably the most cost effective motor oil additive ever developed, is being eliminated from most oil additive packages because of concerns that it "might" poison catalytic converters.
I've always been sceptical of over the counter oil "enhancers". I would consider adding a good cheap ZDDP supplement to my oil. Can anyone on the board offer advise on a good cheap ZDDP additive?
try this additives and your oil click on one of the underlined lines.