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V6 Manual Transmission Fluid Change Thoughts

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Purdue Pete, Feb 21, 2014.

  1. Feb 21, 2014 at 6:24 AM
    #1
    Purdue Pete

    Purdue Pete [OP] Well-Known Member

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    Removed Charcoal filter, K&N filter, and that's it until I can save a bit
    Hey guys,

    Was reading through my Haynes manual and the maintenance section and read a few things I've never done. Does anyone drain their transmission fluid and fill it back up? Thought you had to remove the transmission pan to get all of the fluid out but they said just to remove the fill plug and then the drain plug. Anyone do this? Was going to change the fluid in the clutch pedal as mine is shifting pretty rough when cold so thought maybe the fluid has begun to deteriorate, would be surprised if it has ever been changed.
     
  2. Feb 21, 2014 at 6:42 AM
    #2
    Bellis

    Bellis friggin rad

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    yup its pretty important synthetic will make it shift smoother, you should change every 30000 pan pullin is only for autos
     
  3. Feb 21, 2014 at 6:48 AM
    #3
    TacoCat

    TacoCat These pretzels are making me thirsty

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    Johnny-5
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    The manual transmission has a drain and fill plug, very easy to change. I changed mine out at 30k and it looked pretty good, as did the transfer case, but the front and rear diff looked nasty.
     
  4. Feb 21, 2014 at 7:20 AM
    #4
    Suffield Miller

    Suffield Miller If your not driving a Tacoma...WHY?

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    I am waiting for my '14 SR5 V6, 6speed, D.Cab, Spruce Mica Short with Tow...
    Anyone know if Toyota will consider the manual transmission drain & fill part of their reg maintenance?
     
  5. Feb 21, 2014 at 9:31 AM
    #5
    Purdue Pete

    Purdue Pete [OP] Well-Known Member

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    07 TRD 4X4, V6, 6 spd.
    Removed Charcoal filter, K&N filter, and that's it until I can save a bit
    Hey thanks guys. In my Automatic transmission 4Runner things just seemed to go down hill after the transmission fluid was replaced. But it was an ordeal I guess. I didn't do it. Tried to find the Redline MT90 but haven't been able to on websites of local parts stores. Going to go in and look after work today.
     
  6. Feb 21, 2014 at 9:34 AM
    #6
    TACO TX

    TACO TX Well-Known Member

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  7. Feb 21, 2014 at 9:48 AM
    #7
    Chris24

    Chris24 Well-Known Member

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    You mean the free maintenance plan? No, it will not be covered in that.
     
  8. Feb 21, 2014 at 10:11 AM
    #8
    Suffield Miller

    Suffield Miller If your not driving a Tacoma...WHY?

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    LOL Thanks!
     
  9. Feb 21, 2014 at 2:21 PM
    #9
    Purdue Pete

    Purdue Pete [OP] Well-Known Member

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    Removed Charcoal filter, K&N filter, and that's it until I can save a bit
    This is not the place but I am doing it anyway. I just bought Lucas Synthetic ASE 75W-90 Gear Oil. It says rated for API GL-4, API GL-5. That makes me really nervous. People on here say that they use it with good results. But I would some other opinions.

    The Haynes manual is alright, not great. But alright.
     
  10. Feb 21, 2014 at 2:51 PM
    #10
    iroh

    iroh Well-Known Member

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    tonneau
    My six speed would forever grind 4th gear with GL5 oil, and shifting in general was more difficult. Switching back to GL4 cured that. I know the manual says GL4 or GL5, but there's a reason most manual trannies don't use GL5:

    http://www.widman.biz/uploads/Transaxle_oil.pdf
     
  11. Feb 22, 2014 at 5:20 AM
    #11
    Purdue Pete

    Purdue Pete [OP] Well-Known Member

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    Removed Charcoal filter, K&N filter, and that's it until I can save a bit
    I did give it a shot and everything seems fine. I don't understand how it could have both rating however. That doesn't make a lot of sense. Going to monitor it and see how it goes. Probably will call my local amsoil dealer and ask him to set me up with fluids all around. Dirt bike too. Then if everything is shifting fine until my next oil change I'll replace it.
     
  12. Feb 22, 2014 at 9:03 AM
    #12
    reece13

    reece13 Well-Known Member

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    Redline MT-90 hands down. Best stuff for 6spd manuals. Its what i use. Change it every 30-40k and your good. Very good mesh.
     
  13. Feb 22, 2014 at 9:07 AM
    #13
    CASTRATE

    CASTRATE Well-Known Member

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    Got redline on order for diffs, tcase, &tranny. Eager to try it out
     
  14. Feb 22, 2014 at 9:13 AM
    #14
    reece13

    reece13 Well-Known Member

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    Its great stuff. I ordered mine from summitracing and got a few extra qts for the future. They were the best on price that i could find. Good piece of mind too when using Redline. I havent tried it in my diffs though, im still just using Mobil 1. I may try the Redline in my diffs in the future aswell.
     
  15. Feb 22, 2014 at 9:29 AM
    #15
    CASTRATE

    CASTRATE Well-Known Member

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    Amazon had the best price at time of order. Plus free shipping. Unfortunately, no one local sells it
     
  16. Feb 22, 2014 at 12:14 PM
    #16
    iroh

    iroh Well-Known Member

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    tonneau
    Yeah it is kinda dumb. It's supposed to rate how much extreme pressure additives are in it. Way back when there was supposedly everything from GL1 to GL6, with each higher number meaning more capability of handling shearing motion and pressures between gears.

    Nowadays we just use GL4 and GL5; most everything else is obsolete. Technically GL5 does meet GL4 requirements for lubrication so it can have that on the bottle. Unfortunately it's usually too slippery in a manual transmission (works too well!) and the synchronizers which depend on friction to work just slip. It can let the gear grind during a shift or it locks you out of gear until you rev-match.

    Then there's the yellow metals of the synchros used in many transmissions that the GL5's additives bonds to, and with every shift a little more gets stripped off until many miles down the road the synchros don't work anymore.
     

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