1988 f350

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

  1. theWRIGHTcut

    theWRIGHTcut LawnSite Member
    Posts: 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
    Posts: 3

    I'd call Ford
     
  3. jkason

    jkason LawnSite Senior Member
    Posts: 548

    85-w90 Gear oil.

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

    lwcmattlifter LawnSite Senior Member
    from NC
    Posts: 859

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

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