We have all heard that it is a waste of $$ to buy a product like Slick 50 or Prolong....but my question is , has anyone out there actually done a test on thier oil , before and after treatment????
I will bne having my oil tested in about 2 weeks ...I think I will install some TUFOIL to my crankcase and see what happens .
I will bne having my oil tested in about 2 weeks ...I think I will install some TUFOIL to my crankcase and see what happens .