Originally Posted By: Forest
[Email came in last night from Ashland Valvoline Synpower is a GRP III/GRP IV motor oil.]
That what Valvoline said about their "Synthetic" motor oil.
Can you copy & paste that email here? I'm interested in whetehr all viscosities are the same Groups-mix.... plus interested in a name on the bottom of that email.
Without a tech's name, I am leery about the content's truthfullness.