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Proper fluids for Aging 2.7L

Discussion in '2nd Gen. Tacomas (2005-2015)' started by SonnyMac, May 12, 2021.

  1. May 12, 2021 at 12:25 PM
    #1
    SonnyMac

    SonnyMac [OP] Member

    Joined:
    Jul 23, 2020
    Member:
    #335372
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    Vehicle:
    2006 Base SR5 2WD
    Hello all,

    Trying to sort which fluids to use in my 06, 2wd Base (manual) ~290k

    engine oil (5.8L w/ filter change):
    Currently using 5W-30,
    Haynes manual tells me to use 0W-20? Large difference?

    Transmission (Manual - 2.7L):
    API GL-4?
    API GL-5 75w-90?

    Transfer case (1L)
    API GL-5 SAE 75W-90


    Rear diff (3.31L)
    Haynes recommends
    API GL-5 SAE 90W Gear oil or
    API GL-5 SAE 80W-90 (when below -18*C which possible where I live in Canada)

    Coolant (8.7L):
    Toyota super long life coolant

    What are people using?
     
  2. May 12, 2021 at 12:42 PM
    #2
    Geeves77

    Geeves77 Well-Known Member

    Joined:
    Feb 16, 2020
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    Mark
    Northeast
    Vehicle:
    2011 Tacoma DCSB
    3 inch Icon lift with UCA’s
    In my 2006 4.0L 225,000 miles, I have always used 0/20 for the past five years
    I live up in New England and my truck seems to run fine with that no issues at all

    And I use fully synthetic in all of the drive train and use the weight that Toyota recommends
     
  3. May 12, 2021 at 12:48 PM
    #3
    DGXR

    DGXR Well-Known Member

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    #22094
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    Friend
    Sacramento, CA
    Vehicle:
    2006 2.7L SR5 2-wheel drive
    I have a 2006 2.7 base 2wd with 170k miles, northern California. Always used 5w30 engine oil (synthetic since 120k), pink SLLC coolant, T-IV auto trans fluid and 75w90 synthetic differential oil (open diff). Runs and drives perfect.
    I would not run 0w20 if I were you. Maybe if the engine was fresher and you were seeing ambient temps of -15C or lower, but just maybe. Otherwise stick to 5w30.
    Can't comment on the MT fluid or T-case fluid.
    I would use 75w90 or 80w90 gear oil in the rear diff.
    Yes Toyota SLLC pink coolant every 50k, it's good stuff.
     
    BassAckwards likes this.
  4. May 20, 2021 at 8:01 AM
    #4
    Steve_P

    Steve_P Well-Known Member

    Joined:
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    #22854
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    Male
    TN
    Vehicle:
    09 Tacoma SR5 4WD 4cyl
    The specs are all in the owners manual for what's recommended or required.
    I run 5W-30.
    75W-90 GL-5 is ok in the trans, xfer and diffs; GL-5 is required for the diffs.
    I flushed the coolant in mine and replaced with Prestone green. There is nothing special in a Toyota cooling system where you need to use their pink coolant.
     
  5. May 20, 2021 at 9:41 AM
    #5
    Markcal

    Markcal Well-Known Member

    Joined:
    Aug 14, 2014
    Member:
    #136147
    Messages:
    3,115

    I would only use the Toyota SLL HOAT coolant or if you want to spend less use the Zerex Asian SLL HOAT coolant.
     

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