1. Can’t make it to the GIE+EXPO 2017?
    LawnSite brings the trade show floor to your fingertips with our new GIE+EXPO 2017 Sneak Peek video series debuting now in the Lawn Mowing forum.

    Dismiss Notice

1988 f350

Discussion in 'Trucks and Trailers' started by theWRIGHTcut, Jul 24, 2008.

  1. theWRIGHTcut

    theWRIGHTcut LawnSite Member
    Messages: 122

    recently bought a 88' dump truck... it was a complete steal for only $1,100!!! only 33k original miles on it... did a bit of rusting but time will do that... so anyway, I hadn't gone out to get the book yet but does anyone know what type of oil to use for the gearbox? i couldn't find it on google... let me know thanks
  2. brian674

    brian674 LawnSite Member
    Messages: 3

    I'd call Ford
  3. jkason

    jkason LawnSite Senior Member
    Messages: 546

    85-w90 Gear oil.

    But heavy-duty 85-w140 is better.
  4. lwcmattlifter

    lwcmattlifter LawnSite Senior Member
    from NC
    Messages: 859

    Is it a 5 speed? What engine? The 460 and diesel trucks need synthetic mercon ATF.

Share This Page