First of all, I would think the SL oil would offer better protection...Most of the oils they sell at those dollar stores are SL rated oils.
But I muyself have thought about running the dollar store oil but why do that since I get Trop-artic 10w30 syn-blend from Sam's Club for about 2.25 a qt???
But I muyself have thought about running the dollar store oil but why do that since I get Trop-artic 10w30 syn-blend from Sam's Club for about 2.25 a qt???