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Maintenance questions

Discussion in '2.5 Gen TRD Pro (2014-2021)' started by Strider_0284, Jun 14, 2025.

  1. Jun 14, 2025 at 11:18 AM
    #1
    Strider_0284

    Strider_0284 [OP] New Member

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    Can anyone help me out with my planned maintenance for my new to me Tundra? 2017 Crewmax SR5 5.7 4WD 100k miles. I plan to:

    Change the coolant,

    Change pcv valve

    Replace serpentine belt (anyone know the part #?)

    For changing the front and rear diff fluid: if I bought OEM fluid, the price only comes out $20 cheaper than what the dealer would charge me to do it. I see alot of people recommending Redline 75W-85 GL-5 and alot of people saying they use Mobil 1 75W-90, any input on which direction to go here would be helpful. Also from my research, I gather I need 1 steel crush gasket part # 12157-10010 for the front fill plug and one copper flat gasket # 90430-24003 for the front drain plug, along with two of the above steel crush washers for the rear diff drain and fill, can anyone confirm those part #s are correct?

    As far as limited-slip additives, how do I know if I need them?

    Transfer case fluid, again with the price of OEM fluid, it comes out $8 cheaper than what the dealer charges so ill probably let them do that.

    I'm not too mechanically inclined, so I'd let the dealer do the plugs at 120k.
    If i'm missing anything or if anyone has any tips on the coolant change it would be much appreciated.
     
  2. Jun 14, 2025 at 1:30 PM
    #2
    Terndrerrr

    Terndrerrr 923000 miles to go

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    RAS, 285/75 DTs, dual battery, SS3 Pro
    Part numbers and fluids for the diffs/TC:
     
    AndyTex likes this.
  3. Jun 14, 2025 at 2:12 PM
    #3
    MadMaxCanon

    MadMaxCanon New Member

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    Too many, but not enough....
    I would change plugs and all filters and fluids and also clean throttle body real good and the maf sensor.
     
  4. Jun 16, 2025 at 6:39 AM
    #4
    nasher75

    nasher75 New Member

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    Erik
    Los Gatos, CA
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    2006 Tacoma TRDS 4X4, 2021 Tundra LR TRD Pro
    Agreed... Just do all fluids, filters and might as well get the plugs done at the same time. I wouldn't get hung up on "what's the best gear oil". Just make sure it meets OEM requirements. Always use correct OEM Toyota Coolant and transmission fluid.
     
    MadMaxCanon[QUOTED] likes this.
  5. Jun 16, 2025 at 6:42 AM
    #5
    texoma

    texoma Triple C Chop Shop

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    Lago Vista, TX
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    All the Chrome
    1. Engine oil and filter: 5k miles
    2. Spark plugs: 30k to 60k, use only OEM or Denso equivalent.
    3. AFR/o2 sensors(Upstream Sensors): 60k, use only OEM or Denso equivalent.
    4. Engine Air Filter Clean/Replace: 15k
    5. Clean MAF and TB: 15k
    6. Coolant flush: First 100k, then every 50k there after. Replace Thermostat and radiator cap along with flushing, and only use Toyota pink.
    7. Belts and hoses: 50k or at least with every coolant exchange.
    8. Power Steering flush: 15k to 30k
    9. Brake fluid flush: DOT 3/4 at least every 30k and DOT 5+ at least every 15k.
    10. Transmission drain n fill: 30k
    11. Differential and Transfer case drain n fill: 30k
    12. Fuel injector service and/or fuel filter replacement: 15k, note that many vehicles have in tank filter and is not serviceable.
    13. PCV valve clean/replace: 15k
     
    reywcms likes this.
  6. Jun 16, 2025 at 9:37 AM
    #6
    MadMaxCanon

    MadMaxCanon New Member

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    Too many, but not enough....
    For the 5.7 plugs are 100k i believe. I'd probably do 80k
     
  7. Jun 17, 2025 at 5:22 AM
    #7
    texoma

    texoma Triple C Chop Shop

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    Those are my personal suggestions from expirience. You can do whatever you feel is best. I personally would exceed 60k miles, but I’m also a performance based person.
     
    MadMaxCanon[QUOTED] likes this.
  8. Jun 17, 2025 at 10:46 AM
    #8
    MadMaxCanon

    MadMaxCanon New Member

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    Too many, but not enough....
    Nothing wrong with early maintenance
     
  9. Jun 26, 2025 at 4:10 AM
    #9
    steezy

    steezy New Member

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    Texoma, does running 93 oct change your opinion on any of your intervals?
     
  10. Jun 26, 2025 at 8:27 AM
    #10
    texoma

    texoma Triple C Chop Shop

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    No, octane level won’t have any effect on maintenance intervals. You’ll get a bit less knock, and touch more performance by running premium fuel on stock calibration, but nothing more.
     

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