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Thread: Gearbox Oil Improvement

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    Senior Member ckeithjordan's Avatar
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    Gearbox Oil Improvement

    I just finished replacing the engine/gearbox/OD/differential fluids, having put a 1000 miles on the rebuilt drivetrain. Aside from my travails with the oil filter canister (separate thread), I'm most pleased with swapping out SAE 30 non-detergent motor oil for Redline's MT-90 GL4 gear oil. I immediately noticed smoother, quieter shifting. It was an amazing difference!
    Keith

    1957 TR3 TS20447LO (2017-)
    1962 TR3B TCF1183L (1979-1982)
    1966 Spitfire MKII (1972-1975)

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    Moderator Andrew Mace's Avatar
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    Re: Gearbox Oil Improvement

    I've no experience with the Redline MT-90 in a "big" TR gearbox, but I had similar results in a Herald/Spitfire gearbox!
    -- Andrew (Andy) Mace, VTR's Triumph 10/Herald/Sports 6 vehicle consultant and keeper of the North American Triumph Sports 6 and Herald Database

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    Re: Gearbox Oil Improvement

    Is Redline MT-90 recommended for OD transmissions as well?

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    Yoda CJD's Avatar
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    Re: Gearbox Oil Improvement

    Yes...that’s what he meant with OD! My OD would stick engage on 30w non-detergent. The Redline loosened it right up.
    John

    1955 TR2

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    Re: Gearbox Oil Improvement

    Is the OD serviced separately from the transmission?
    I own 1958 TR3A TS 26005L and have the privilege of working on 1960 TR3A TS 65587L.

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    Senior Member ckeithjordan's Avatar
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    Re: Gearbox Oil Improvement

    Not sure if you mean is the oil changed separately, but no. Both the gearbox and the OD have to be drained separately, but are filled jointly.

    Was that your question?

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    Re: Gearbox Oil Improvement

    Yes it was. Very timely. Thanks!
    I own 1958 TR3A TS 26005L and have the privilege of working on 1960 TR3A TS 65587L.

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    Luke Skywalker
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    Re: Gearbox Oil Improvement

    Put Redline in my Alfa Spider and improved shifting - at least until my clutch went out.

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