Ok i was just wondering. i use penz high milage 5/30 in my work car buick 3.1, i recently started to buy the value 5 qt. jug for the oil change with the st 3387a [i believe that is the number] oil filter.
My question is the Supertech synthetic 5/30 any better than the penz high milage 5/30. The reason is the 5 qt. jug of st synthetic is about the same price.
is there any benefit to switching to the supertech?
thanks