Is slick 50 just like a 50 weight motor oil like stp?
Im using 5w30 with stp, what grade is it really. 10w40? Because I only get about 7-9 psi at hot idle.
Im using 5w30 with stp, what grade is it really. 10w40? Because I only get about 7-9 psi at hot idle.
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