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Changing Trans Oil (Opinion Please)

This is a discussion on Changing Trans Oil (Opinion Please) within the Manual Transmission forums, part of the Drivetrain category; Going to change my transmission oil (6 speed) what type? I's a choice between RED LINE MTL and ROYAL PURPLE, ...

  1. #1
    Junior Member enjun's Avatar
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    Changing Trans Oil (Opinion Please)

    Going to change my transmission oil (6 speed) what type? I's a choice between RED LINE MTL and ROYAL PURPLE, problem what type do I use if I go with RP. Need Imput

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    Your dealership guy konigandy6's Avatar
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    I just use GM trans fluid. Works great.

    2008 Z06 - Velocity Yellow - OEM

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    Slow'er'Ass Mr. Luos's Avatar
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    4 quarts ATF.

    GM stuff is probably a good bet.
    Otherwise, call a tranny shop and ask them.
    The most expensive fluid I put in mine is Mobil 1 ATF.
    I can't see spending $12 a quart for a product that is barely any better than the $7 a quart stuff.

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    Member SAGGIN's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    4 quarts ATF.

    GM stuff is probably a good bet.
    Otherwise, call a tranny shop and ask them.
    The most expensive fluid I put in mine is Mobil 1 ATF.
    I can't see spending $12 a quart for a product that is barely any better than the $7 a quart stuff.
    ^^I agree. Kind of like buying generic perscriptions. Same thing just different names.

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    SS Driver aerojt's Avatar
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    I went with just the regular atf, I know synthetic is said to be better, saves hp,etc. I just don't trust it, each manufacturer says something different for each tranny. Personally I am just into running what oem recommends.

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    Nitrous Tuner LS2Tuner's Avatar
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    I have replaced over 15 with the RedLine and had great results. I have also used the Amsoil lately and had the same results.
    If your in a warm climate I didn't look I would suggest changing to either of them to help with heat.
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

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    what fluid spec does the trans actually call for, atf or gear oil?

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by FirstGT View Post
    what fluid spec does the trans actually call for, atf or gear oil?
    ATF

  9. #9
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    1999 Z28

    So why even consider MTL then since its gear oil?

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    Senior Member INMY01TA's Avatar
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    I prefer the Redline D4 ATF over the MTL. I've tried both.

  11. #11
    Senior Member JonB's Avatar
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    regualar atf or gm/pennzoil sycromesh.

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