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Duramax GMC

Discussion in 'Trucks and Trailers' started by Turf Technologies, Sep 18, 2005.

  1. Turf Technologies

    Turf Technologies LawnSite Senior Member
    from Florida
    Posts: 590

    Will br picking up my first diesel monday.Wondering why those that have them leave them running when there not in them?
  2. DBL

    DBL LawnSite Silver Member
    Posts: 2,219

    someone add to this but it is supposed to be more economical to leave them running then to keep starting and stopping. I have one and have been around diesel my whole life from farm tractors to tow trucks so i should know but i dont
  3. jpmako

    jpmako LawnSite Senior Member
    Posts: 593

    I believe you are correct.
    With some of the larger diesel engines it actually uses more fuel to start the motor than it does to let it idle for a 1/2 hour or so.

    You will be happy with the D-Max I just got one about two months ago and have been nothing but pleased with it.

    Good luck with the new truck :waving: !

  4. stumper1620

    stumper1620 LawnSite Bronze Member
    Posts: 1,889

    they need time idling for the bo to cool down.
  5. xcopterdoc

    xcopterdoc LawnSite Senior Member
    Posts: 752

    An engine thats running burns fuel.. An engine that isnt running burns no fuel.
    Only reason to idle a diesel nowadays is to let the turbo whine down a lil before shutdown. Or if yur unsure if its gonna start again!
    I work on alot of different diesels.. from 3 cyl to 18 cyl.. there isnt a one that takes more fuel to start than to run for 30 minutes.
    Truckers leave their rigs idle I guess to power their A/C and electrical systems while they sleep.
    Old timer let em run I think because they were such a pain to get started again sometimes! You had things like compression releases and air starters, hot shots and ether injectors. Yeah those were the good old days! NOT!
  6. Turf Technologies

    Turf Technologies LawnSite Senior Member
    from Florida
    Posts: 590

    OK then nothing to worry about. Any tips on maintance?
  7. DBL

    DBL LawnSite Silver Member
    Posts: 2,219

    i still see more diesel ideling then shut off like if a bunch of plow trucks are sitting around or just trucks in general
  8. Turf Technologies

    Turf Technologies LawnSite Senior Member
    from Florida
    Posts: 590

    O well, cant get the Duramax, have to settle for gas.The only Duramax the could find in the color I wanted had bad hail damage.
  9. Brianslawn

    Brianslawn LawnSite Silver Member
    Posts: 2,004

    if its a gm diesel you have to leave them running cause they may not start again. lol! :p
  10. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    I let my cummins idle if I know im only gonna be gone a minute or two mainly because I feel it is tougher on the engine to start and stop it every other minute, I will also let it idle to cool off the turbo after a WOT run :cool2:

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