Speed Jr. picked out nine oil additive products you can find on the shelves of any auto parts store for this test. Stuff like Marvel Mystery Oil, Lucas Stabilizer, Rislone ZDDP Supplement ...

Rislone said its new DPF Clean Diesel DPF Exhaust ... Pilot Flying J has introduced a new diesel fuel treatment with an anti-gel formula and is now winter-blending its diesel fuel in cold ...