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Rear diff

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Old metals, Jan 25, 2025.

  1. Jan 25, 2025 at 5:38 AM
    #1
    Old metals

    Old metals [OP] Well-Known Member

    Joined:
    Nov 14, 2022
    Member:
    #410626
    Messages:
    142
    Gender:
    Male
    First Name:
    John
    Vehicle:
    02 x-cab 4x4 2.7 2018 TRD Sport 4x4 3.5
    Original
    Trying to understand my owners manual for fluid change capacity
    I'm confused. Can someone straighten me out.
    2018 TRD Sport 3.5L AT 4wd no locking rear diff.
    Door tag says GRN305L-CRTSHA
    Here's whats in the manual for capacity's.
    What the hell is mine?????



    Differential
    Oil capacity
    (Reference)
    Front (4WD models) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
    Rear
     Vehicles with an automatic trans-
    mission
    3.1 qt. (2.9 L, 2.6 Imp.qt.) *2
    3.22 qt. (3.05 L, 2.68 Imp.qt.) *3
    4.0 qt. (3.8 L, 3.3 Imp.qt.) *4
    4.2 qt. (4.0 L, 3.5 Imp.qt.) *5
     Vehicles with a manual transmis-
    sion
    4.0 qt. (3.8 L, 3.3 Imp.qt.)
    Oil type and viscosity * 1 Toyota Genuine Differential Gear Oil
    LT 75W-85 GL-5 or equivalent

    630 9-1. Specifications
    * 1
    : Your Toyota vehicle is filled with “Toyota Genuine Differential Gear Oil” at
    the factory. Use Toyota approved “Toyota Genuine Differential Gear Oil” or
    an equivalent oil of matching quality to satisfy the above specification.

    * 2
    : Except for GRN330L-PRTSHA, GRN330L-PRTLHA, GRN310L-PRTSHA
    and GRN310L-PRTLHA models* 6 without rear differential lock system
    * 3
    : For GRN330L-PRTSHA, GRN330L-PRTLHA, GRN310L-PRTSHA and
    GRN310L-PRTLHA models *6 without rear differential lock system
    * 4
    : Except for GRN330L-PRTSHA, GRN330L-PRTLHA, GRN310L-PRTSHA
    and GRN310L-PRTLHA models* 6 with rear differential lock system
    * 5
    : For GRN330L-PRTSHA and GRN310L-PRTSHA models *6 with rear differ-
    ential lock system
    * 6
    : The model code is indicated on the Certification Label. (P. 625)
     
  2. Jan 25, 2025 at 5:45 AM
    #2
    dryheat

    dryheat Well-Known Member

    Joined:
    Jun 23, 2024
    Member:
    #451995
    Messages:
    245
    Vehicle:
    Power windows/locks. ABS!
    Does it matter if you just fill it until it weeps?
     
    Chew and Clearwater Bill like this.
  3. Jan 25, 2025 at 5:58 AM
    #3
    TailHook

    TailHook Oh, what shall we do with a drunken sailor?

    Joined:
    Jun 23, 2018
    Member:
    #257280
    Messages:
    2,753
    Gender:
    Male
    First Name:
    Alan
    Southern UT
    Vehicle:
    2018 TRDOR 4X4, 2007 Sequoia 4X4
    GRN305L-CRTSHA is an access cab 4WD, and your Sport has the smaller diff without a locker. Get 4 quarts of 75W-85 (or 75W-90) and fill until it weeps out...

    Pro tip: Always loosen the fill plug before the drain plug, and replace the crush washers
     
  4. Jan 25, 2025 at 9:00 AM
    #4
    Old metals

    Old metals [OP] Well-Known Member

    Joined:
    Nov 14, 2022
    Member:
    #410626
    Messages:
    142
    Gender:
    Male
    First Name:
    John
    Vehicle:
    02 x-cab 4x4 2.7 2018 TRD Sport 4x4 3.5
    Original
    TailHook likes this.

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