Originally Posted by hink
I use CENPECO in my alky engines its loaed with zinc 2300 PPM.
Have used it for 15 years now and no issues.
Amsoil never use to be copatible with alky.
In our circle engines on gas AMSOIL is all I reccomend and have the best results with thier porducts.
Is it possible for an oil to have too high a zinc content? If so, what is that threshold? What are the negative effects an engine may incur with an oil with too much zinc?