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Great cold start oil pressure(not super high), and good pressure when hot. Rotella t6 preciously had higher oil pressure at start up with the 5w-40, but besides that I never noticed a change to how the car drove or how the engine sounded, so I stuck with the mobil 1 for its better cold start oil pressure If i lived in a desert climate I would give the 50 or 60 weights a shot, but no need for that here.
IMO all oils today are superior to what we had 25 years ago. I personally believe its more benfitial to change the oil frequently, than to try to find that special magic oil that will cure all your problems that probably arent oil related anyways...
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