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Rear diff oil?

Discussion in '1st Gen. Tacomas (1995-2004)' started by G59, Feb 2, 2017.

  1. Feb 2, 2017 at 9:48 AM
    #1
    G59

    G59 [OP] Stock af

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    Does anyone know what weight of gear oil to put in the rear diff (w/o locker) of an 03 tacoma?

    Thanks in advance!
     
  2. Feb 2, 2017 at 9:49 AM
    #2
    JonathanH

    JonathanH Well-Known Member

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  3. Feb 2, 2017 at 9:56 AM
    #3
    G59

    G59 [OP] Stock af

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    thanks bro :thumbsup:
     
  4. Feb 2, 2017 at 9:56 AM
    #4
    elnip

    elnip Well-Known Member

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  5. Feb 2, 2017 at 9:59 AM
    #5
    JonathanH

    JonathanH Well-Known Member

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    TACOMA Truck


    ASM/PARTS COUNTER REFERENCE GUIDE

    2001 TRUCK

    Auto

    Engine Trans Differential

    Trans Oil w / — 4WD

    Gears Filter Drain Transfer Manual Coolant Fuel

    USA Engine & Change & Fill Case Trans Capacity Front Rear Tank

    Model Body Style Cyl Type (qts.) (qts.) (qts.) (qts.) (qts.) (qts.) (qts.) (gal.)

    4x2

    7103 Reg Cab 4 5M 5.8 ---- ---- 2.7 8.5 1.4 ---- 16.0

    7104 Reg Cab 4 4A 5.8 2.5 ---- ---- 8.2 1.4 ---- 16.0

    7113 Xtracab 4 5M 5.8 ---- ---- 2.7 8.5 1.4 ---- 16.0

    7114 Xtracab 4 4A 5.8 2.5 ---- ---- 8.2 1.4 ---- 16.0

    Xtracab

    7153 S-Runner 6 5M 5.7 ---- ---- 2.7 10.3 2.7 ---- 16.0

    4x2 PreRunner

    PreRunner

    7132 Reg Cab 4 4A 5.8 1.7 ---- ---- 8.7 1.2 ---- 18.5

    PreRunner

    7162 Xtracab 4 4A 5.8 1.7 ---- ---- 8.7 1.2 ---- 18.5

    PreRunner

    7164 Xtracab 6 4A 5.7 1.7 ---- ---- 10.5 1.2 ---- 18.5

    PreRunner

    7186 Double Cab 4 4A 5.8 1.7 ---- ---- 8.7 1.2 ---- 18.5

    PreRunner

    7188 Double Cab 6 4A 5.7 1.7 ---- ---- 10.5 1.2 ---- 18.5

    4x4

    7503 Reg Cab 4x4 4 5M 5.7 ---- 1.1 2.6 8.8 1.2 2.8 18.5

    7504 Reg Cab 4x4 4 4A 5.7 2.1 1.1 ---- 8.7 1.2 2.8 18.5

    7513 Xtracab 4x4 4 5M 5.7 ---- 1.1 2.6 8.8 1.2 2.8 18.5

    7514 Xtracab 4x4 4 4A 5.7 2.1 1.1 ---- 8.7 1.2 2.8 18.5

    7553 Xtracab 4x4 6 5M 5.5 ---- 1.1 2.3 10.7 1.2 2.8 18.5

    7554 Xtracab 4x4 6 4A 5.5 2.1 1.1 ---- 10.5 1.2 2.8 18.5

    7594 Double Cab 4x4 6 4A 5.5 2.1 1.1 ---- 10.5 1.2 2.8 18.5

    Recommended Fluids:

    Engine Oil SAE 5W-30

    Automatic Transmission Toyota Genuine ATF DEXRON II/ III

    Transfer Case SAE 75W-90

    Manual Transmission SAE 75W-90

    Coolant Toyota Super Long Life Coolant with Ethylene-Glycol Type

    Differential (REAR) SAE 80W-90 Below 0F, SAE 90 Above 0F (FRONT) SAE 75W-90

    Fuel Unleaded Gasoline, Octane Rating 87 or Higher

    Power Steering DEXRON II or III

    Brakes DOT 3
     
    G59 [OP] likes this.
  6. Feb 2, 2017 at 10:20 AM
    #6
    elnip

    elnip Well-Known Member

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    I don't think it gets below 0F in Ontario CA to say 80W-90 according to what you posted.

    "Differential (REAR) SAE 80W-90 Below 0F, SAE 90 Above 0F"

    I stand corrected for the 03 per Toyota to use straight 90, I wonder why that spec changed.
     
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  7. Feb 2, 2017 at 10:23 AM
    #7
    JonathanH

    JonathanH Well-Known Member

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    Thank you for pointing that out, I should have read the whole thing first.
     
  8. Feb 2, 2017 at 10:24 AM
    #8
    cruiserguy

    cruiserguy Well-Known Member

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    I dunno, that is odd. I'd have a hard time, myself, running straight 90w in the diffs. 75w-90 synthetic for me, because I don't wanna have to change it every 30k or whatever the fsm maintenance plan says.
     
  9. Feb 2, 2017 at 10:25 AM
    #9
    elnip

    elnip Well-Known Member

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  10. Feb 2, 2017 at 10:27 AM
    #10
    elnip

    elnip Well-Known Member

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  11. Feb 2, 2017 at 10:28 AM
    #11
    cruiserguy

    cruiserguy Well-Known Member

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    Dammit, but it's really bugging my brain. What did they find to cause them to change that spec?
    Maybe just a typo? Not likely. Huh.
     
  12. Feb 2, 2017 at 9:19 PM
    #12
    G59

    G59 [OP] Stock af

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    Yeah I ended up throwing in 75w90.. but genuine buffoonery has struck again. Of course my ass forgot to put the washer on the drain bolt. :frusty: How important is that washer??
     
  13. Feb 3, 2017 at 12:12 AM
    #13
    QMEDJoe

    QMEDJoe Proverbs 3:5-6

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    I'd play it safe. I'd rather pay for a bottle of 75W90 than a new rear diff.
     
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  14. Feb 3, 2017 at 3:19 AM
    #14
    cruiserguy

    cruiserguy Well-Known Member

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    It's a gasket. Without it, it should weep diff oil. I guess if it doesn't leak, I don't know how it wouldn't, then run it until it does start weeping. And then put the plug gasket on. But of course, it really should be there.
     
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  15. Feb 3, 2017 at 7:50 AM
    #15
    G59

    G59 [OP] Stock af

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    SOB! Well I got a lot of time on my hands for the next few days. I'll probably drain it and throw it back on then
     
  16. Feb 3, 2017 at 7:57 AM
    #16
    757yotas

    757yotas Well-Known Member

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    Run 80w-90 for 15000 miles no issue
     
  17. Feb 3, 2017 at 8:59 AM
    #17
    pulldo

    pulldo Well-Known Member

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    FYI,,, take it for what it cost you ,,, these guys here are professionals,, they say nothing but dino oil in the diffs'.
     
  18. Feb 3, 2017 at 11:50 AM
    #18
    cruiserguy

    cruiserguy Well-Known Member

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    Lol, and Mobil 1 isn't a professional company? I've been running it in Yota diffs for 15+ years. Never had a problem. I'm not buying that dino oil stuff man, old school minds need to get with the times. I'm not aware of a single application on these tacos where it would actually be better to run dino oil. Now you can argue well synthetic is bad, a waste, etc. But to actually say dino performs better than synthetic??? C'mon.
     
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  19. Feb 3, 2017 at 12:00 PM
    #19
    drr

    drr Primary Prognosticator

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    Agreed, no reason not to run synthetic. I use dino oil to break in new gears, which is what most diff shops recommend, mostly because it's cheaper.
    I have mobil1 75-90 in both diffs and the transfer case, works great.
     
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  20. Feb 3, 2017 at 12:05 PM
    #20
    QMEDJoe

    QMEDJoe Proverbs 3:5-6

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    Has anyone ever used the Redline MT-90 in their diffs? I'm about to change out all my oils again and going with the Redline MT-90 for my trans and wondering if I can just use it for my diffs and transfer case too. Wondering if Toyota suggests GL-4/GL-5 oils with the trans vs the diffs-transfer case?
     
    Last edited: Feb 3, 2017

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