How Long Should I Idle My Turbo Diesel Before Turning Off the Ignition?

Written by natalie lyda
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How Long Should I Idle My Turbo Diesel Before Turning Off the Ignition?
Idling diesel motors before shutting them off may cause excess pollution. (exhaust fulmes image by bilderbox from

The turbochargers in various diesel trucks may require idling a truck for a few minutes in order to allow the turbo to slow down and cool, protecting bearing components. The need for idling will vary based on the age and model of the truck, as well as the amount of weight the vehicle has been pulling.

Consider the Effects of Idling

Long-term idling can cause more wear and tear on diesel motors than driving at normal speeds. By leaving a motor running for longer than necessary, not only do you risk eventual damage, but you use excess fuel and produce unnecessary emissions.

Bottom Line

Allow a turbo diesel truck to idle for cooldown according to the vehicle's manufacturer's specifications. The normal recommended time frame for idle before shutoff is three to five minutes, depending on how long you have been driving the vehicle and if it has been towing. There is no need to idle a diesel truck for any period of time beyond the initial cooldown.

Don't Miss

  • All types
  • Articles
  • Slideshows
  • Videos
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the site, you consent to the use of cookies. For more information, please see our Cookie policy.