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Mobil 1 synthetic oil?

Discussion in 'Trucks and Trailers' started by walker-talker, Sep 8, 2002.

  1. walker-talker

    walker-talker LawnSite Platinum Member
    from Midwest
    Messages: 4,771

    I have heard good things about this oil brand, so I thought I would give it a try. I noticed that when the truck has been running awhile and is hot, that I lose oil pressure on the guage.
    Is this common? Is it becasue the oil thins out more than non-synthetic? Should I be concerned? There is about an 10lb difference.

  2. Brickman

    Brickman LawnSite Bronze Member
    Messages: 1,249

    I have been using Amsoil synthetic. About the only dif I see is when it is cold (winter) the truck doesn't start as hard. As for the pressure I haven't noticed a dif. And no increase in fuel mileage either.
  3. I use amsoil have'nt noticed any pressure changes.

    I use amsoil in work trucks, mowers, two cycle and even my old 69 harley sporty .
    Aint put it yet in the wifes cts caddy yet but its in my trailblazer now.Got the duel bypass filters on the work trucks.
  4. 65hoss

    65hoss LawnSite Fanatic
    Messages: 6,360

    You should not be having that. Either the oil pump is going bad or the gauge is.

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