|
During the last oil change I used Swepco 502 oil additive. I called Swepco and the guy said it has a high level of Zn. Can anyone confirm about this? I did notice a reduction of valve train noise.
The oil I'm using is M1 15-50 (the new formulation with low Zn). Does anyone think this is an "ok" combination? or should I go with one of the oils listed above?
|