Obsolete oil, Modern oil and oil additives, a good read.
Re: Obsolete oil, Modern oil and oil additives, a good read.
logic would dictate to match ZDDP amount to the limit of the manufacture date of the engine or a few years before that, as they are designed a couple years before they're put in service.
Re: Obsolete oil, Modern oil and oil additives, a good read.
Maybe, but what about the new millenia's? 2000+ designs?
I've checked and i've used 900 zddp most of the time.
I've checked and i've used 900 zddp most of the time.