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shut off truck or leave run?

Discussion in 'Trucks and Trailers' started by sirsweatsalot, Jan 22, 2003.


leave it run or shut it down

  1. leave it run

    12 vote(s)
  2. shut it down

    15 vote(s)
  1. bob

    bob LawnSite Platinum Member
    from DE
    Messages: 4,260

  2. KirbysLawn

    KirbysLawn Millenium Member
    Messages: 3,485

    I have a turbo temp monitor (TTM) and when I stop and turn the truck off it will run until the turbo cools to a pre-set temp, 350 degrees on mine. So I guess I do both. :)

    Here is the TTM:


    Pyro on a post:


  3. bob

    bob LawnSite Platinum Member
    from DE
    Messages: 4,260


    Ray, how long wil your truck run, say on a 85 degree day ,after driving to full engine temp?
  4. KirbysLawn

    KirbysLawn Millenium Member
    Messages: 3,485

    Depends on the load, the grade prior to shutting down ,etc...I would say just a few minutes, rarely over 5 minutes. Cool thing is I can shut down, lock doors, set alarm and go.
  5. stslawncare

    stslawncare LawnSite Bronze Member
    from DE
    Messages: 1,484

    what about for gas engines?
  6. Randy J

    Randy J LawnSite Bronze Member
    Messages: 1,124

    Gas or diesel really doesn't matter. What matters is turbocharged. The turbo gets super hot, and if cool(er) oil isn't allowed to circulate through the turbo a while to cool it down, the oil can "coke". This can plug the oil passages to the turbo, and elsewhere, in addition to wearing down the oil prematurely. Synthetic oils help greatly in this regard, but it's really imperative if the engine is turbocharged to let it idle for a few seconds, or minutes, depending on how hard it was being run, before shutdown.


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