As Ultra is to be Pennzoil's top of the line for what technical reasons do some prefer the Platinum over the Ultra besides price.
I see some very good used oil analysis on Platinum but is it believed by some to be better than Ultra?
If I choose to run one just trying to decide which.
I see some very good used oil analysis on Platinum but is it believed by some to be better than Ultra?
If I choose to run one just trying to decide which.