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Thread: Poor GQ 4.2 manual shifting

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    Poor GQ 4.2 manual shifting

    Hi All

    I'm having issues with shift quality in my GQ 4.2 5 speed. It's a real effort to get 1st or 2nd without grinding. Any tips that might help improve or eliminate it. Gearbox onl has 220k on it.

    I suspect a clutch adjust may help, but I'm also concerend it's ready to be replaced.

    cheers
    Damo

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  3. #2
    Patrol Guru gubigfish's Avatar
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    the 5spd gearboxes in patrols can be quite notchy when cold as in it takes a bit to get it into gear but shouldn't be grinding gears like you say. Once they warm up gear shifts are smooth.
    2004 4.2TDi GU ST Ute, 3" Exhaust, UHF, Lightforce Spotties, BFG All Terrains, Steel Winchbar, Winch, Dual Batts, CC Ultimate IC, 4" Snorkel, XLR8 Steps and Scrub bar

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    Patrol Freak garett's Avatar
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    drop the oil and try a GL4 grade oil.
    if its worth doin its worth over doin

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    Expert 92GQ's Avatar
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    Quote Originally Posted by garett View Post
    drop the oil and try a GL4 grade oil.
    X2
    The 4.2's defiantly need a gl-4 oil in their manual transmissions!

    I've been using penrite 75-85 full synthetic for years, makes it a pleasure to drive and my GQ has just gone over 400,000kms.

    The gl-4 oil helps the synchros. Gl-5 oils make the transmission very difficult to shift between gears.
    1992 TD42 GQ Patrol Wagon

    My GQ Build Page

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