Originally Posted by ad244
Originally Posted by Doublehaul
I'd always heard about Quaker state and Pennzoil being the sludge causers. Unfortunate as I worked as mechanic for years. Never paid any mind to it personally but I heard it from so many people and for so long. Gospel in the north woods.
I'd been doing UOAs for years on fleet vehicles we serviced with bulk Dino (reputable bulk that met legit specs...generally citgo and warren) so I knew better. Specs are specs. If Quaker state and pennzoil met the same specs I knew the UOAs would be fine and they always were.
Oddly the north woods always seemed to be Mobil and Valvoline country. Still is really though I'd guess super tech has cut in in a huge way.
I'd run QS w/out hesitation and have many times. I like their marketing, price and packaging.
I was thinking about this some more and it kind of seems like more and more people are jumping off the Mobil bandwagon and onto some of the other smaller oil brands (perhaps even Castrol?).
It is interesting to wonder why? better bargains?
My absolute WAG about this, never fully embracing Mobil oil as my own personal brand of choice, largely of because of how it performed in my engines and how other choices were better and that was my choice, not a knock on those that choose M1, such a disclaimer is necessary for the loyalists on here and those reading the board... is that maybe Mobil is being perceived as an evil empire, if talking to the greenies, and other brands or not.. it would be much harder to argue that the chemical composition change is the reason, since it seems M1 is better than ever before. Some people, however, fear change.
That's all I got, and I do not know.
Shopping, looking for Dex6 trans fluid. I think one of us came in and bought it all. Two jugs left on the shelf. Carry on.