Gearbox oil in P1800

Discussion in 'Other Volvo Models' started by DB, Apr 15, 2004.

  1. DB

    DB Guest

    The overdrive in my 1973 1800 engages and disengages pefectly when the
    weather is cold, but in hot weather, after driving in overdrive for
    more than 10 minutes or so, the overdrive often doesn't disengage. 30W
    motor oil is specified for the gearbox (and overdrive), but I wonder
    if a multi weight oil migh help my problem. Any comments/suggestions?
    DB, Apr 15, 2004
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