I've been a Castrol oil guy, in particular High-Mileage, for decades now, but also along the way I've heard some pretty good things about Valvoline and Valvoline Maxlife.
Since the latter is what I run in the transmission of my 2002 Toyota Sienna, with over 203,000 miles on it, I was thinking of maybe switching to Valvoline Maxlife for my motor oil as well, but I don't know why I would, chemically speaking, because Castrol seems to be working just fine for me.
So can anybody tell me any particular benefit I might be get out of switching, or Is it a classic case of if it ain't broke why fix it?
Since the latter is what I run in the transmission of my 2002 Toyota Sienna, with over 203,000 miles on it, I was thinking of maybe switching to Valvoline Maxlife for my motor oil as well, but I don't know why I would, chemically speaking, because Castrol seems to be working just fine for me.
So can anybody tell me any particular benefit I might be get out of switching, or Is it a classic case of if it ain't broke why fix it?