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Regular oil vs. synthetic

Discussion in 'Technical Chat' started by thenrie, Sep 10, 2007.

  1. Sep 10, 2007 at 9:10 AM
    #1
    thenrie

    thenrie [OP] Well-Known Member

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    Stafford, VA
    Vehicle:
    2000 Tacoma, SR5, TRD, 2.7L (LEV), 4wd, 5sp m
    Magnaflow cat and cat-back exhaust, AFE Stage 2 cold-air intake system, 2.5" lift via Skyjacker leaf packs, Bilstein 5100s.
    I know there was another similar thread, but it didn't address my question. I just bought a 2000 Tacoma, SR5, TRD, 2.7, 5sp man, 4wd, 120K miles. I want to change all the fluids, including engine oil, tranny & xfer case oil, F & R diff oil. The guy on the phone told me that with that many miles I should just stick with regular oil. He also seemed to indicate that if the vehicle has not had synthetic in it in the past, I shouldn't start now.

    What is the problem with mixing oil with synthetic? How do I tell whether the truck has had synthetic in it, and why shouldn't I go ahead and change to synthetic now if it hasn't had it before?:(
     
  2. Sep 10, 2007 at 2:31 PM
    #2
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    Will
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    the thing with synthetics is their cleaning abilities, which can tend to cause small holes in the seals..........just on occasion though. i think you will be fine running synthetic if you wanted to......just watch to see if your motor starts to have any leaks. it may even be a good idea to run a high mileage synthetic with that many miles on your truck, just my opinion of course.
     
  3. Sep 10, 2007 at 4:48 PM
    #3
    Mudbug

    Mudbug Well-Known Member

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    Amsoil 0w-20 engine oil and Amsoil Full synthetic 75w-90 in the Transmission, transfer case, front and rear Differentials. AFE Cold Air Intake
    Synthetics are more "slippery" if you have small holes in your seals that regular dinosaur oil might not slip through you might get a leak if you put the more slippery synthetic in it.
     
  4. Sep 11, 2007 at 4:29 AM
    #4
    thenrie

    thenrie [OP] Well-Known Member

    Joined:
    Sep 1, 2007
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    Messages:
    257
    Gender:
    Male
    Stafford, VA
    Vehicle:
    2000 Tacoma, SR5, TRD, 2.7L (LEV), 4wd, 5sp m
    Magnaflow cat and cat-back exhaust, AFE Stage 2 cold-air intake system, 2.5" lift via Skyjacker leaf packs, Bilstein 5100s.
    Thanks, guys. I thought maybe there was some sort of compatibility problem, sort of a water-and-oil type thing. I bought the Mobil 1 High Mileage 10w-40 after reading a thread on bobistheoilman.com, which was recommended on the other oil thread. Pretty good stuff on that page. I know Toyota recommends 5w-30, but I figured I was ok going with 10w-40, with 120K on the engine, even here in Pittsburgh.
     
  5. Sep 11, 2007 at 2:16 PM
    #5
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    York,South Carolina
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    '13 Silverado ext cab


    i think you made an excellet choice. shouldnt give ya any problems at all!
     
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