Hey folks, my old Moto Guzzi needed to have high zinc oil due to tappets lifters or some such valve related stuff.
I was browsing subaru forums and heard people talking about how subaru boxer engine could use the zinc too.
I think zinc amount in oil was reduced due to emissions and or harm to catalytic converter?
What will extra zinc do to a modern engine?
I was browsing subaru forums and heard people talking about how subaru boxer engine could use the zinc too.
I think zinc amount in oil was reduced due to emissions and or harm to catalytic converter?
What will extra zinc do to a modern engine?