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Thread: Manual Trans gear oil

  1. #1

    Manual Trans gear oil

    What do you guys recommend? I used to hear everyone rave about Redline MT-90 but now I'm hearing better things about the Royal Purple. Any input from personal experiences?

    And viscosity is 75W90 right?

  2. #2
    I've always heard the best about Redline MT-90 on my end. Been wanting to change over to it for a while.
    "You can't be gay AND have a small pee pee, thats not how it works." - xDJ DUBx

  3. #3
    Headlights up, Top down. DemonIAm's Avatar
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    Nov 2007
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    I'll be picking up some Amsoil MTG on my next payday

  4. #4
    blahhhh transmission blahhh pdhaudio83's Avatar
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    You have a limited slip?

    I've used and reccommend Redline MT-90 or ultralight shockproof gear oil, depending on the trans. Royal purple didn't do much for me- seemed WAYYYY thin when I took it out (shocked me actually)
    2001 Mazda Protege M P 3 (fun car)
    2008 Mazdaspeed3 (daily)

  5. #5
    I'd go redline as well. It did wonders for the MSM transmission... for a little while but that's not a problem with a fluid. More wrong there.

    We had an 82 BMW 320i with a sloppy transmission and Redline cured it right up.



  6. #6
    I put redline in the LSD'd tranny

  7. #7
    Quote Originally Posted by pdhaudio83 View Post
    You have a limited slip?

    I've used and reccommend Redline MT-90 or ultralight shockproof gear oil, depending on the trans. Royal purple didn't do much for me- seemed WAYYYY thin when I took it out (shocked me actually)
    I do.. but it's not inside the trans yet lol
    Quote Originally Posted by CulRidr View Post
    I put redline in the LSD'd tranny
    Ok, thanks guys. Looks like Redline MT-90 wins after all.

  8. #8
    NC goes :0 daftIntrovert's Avatar
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    MT-90 for sure. I tried all the RP products (well.. gear oil and engine oil) and was not impressed by any of them.

  9. #9
    GM Synchro-mesh for me please.
    "While driving yesterday I saw a banana peel in the road and instinctively swerved to avoid it...thanks Mario Kart."

  10. #10
    Quote Originally Posted by Super Matty P View Post
    GM Synchro-mesh for me please.
    just called today to get a price on that stuff.

    Doing my clutch this weekend.

    Did you run all synchro-mesh? I remember reading something about doing a mix but im not sure what the mix was.
    IS THIS PITTSPEED? :(

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