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Was dead wrong about synthetic oil in my old Cummins
I spent 15 years swearing conventional Rotella was the only thing that belonged in a 12-valve. Buddy at the shop kept pushing synthetic, said I was leaving power on the table. Finally tried it after I pulled a pan full of sludge at 350k miles. Six months later my oil analysis came back cleaner than ever and I gained 2 psi oil pressure hot idle. Any of you guys made the switch on a high-mileage engine and seen real results?
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jade477d ago
Put 300k on my 7.3 Powerstroke with dino oil. Switched to synthetic at 180k and picked up 3 psi at idle. Oil drain intervals went from sludge city to clean as a whistle. Tough to argue with lab results like that.
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the_wendy6d agoMost Upvoted
Right because a 3 psi bump at idle totally justifies the premium you paid for that synthetic oil. Guess those Powerstrokes just hate cheap oil until they get a taste of the good stuff.
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