ideling

Short term it's fine.

Long term it can could make the def/dpf system go bad sooner.

I idle all summer (dedicated run in texas) the only thing that changed was it did a parker passive regen more often.

 

Idle at 1,000 rpm, otherwise engine doesn't get hot enough to do a passive regen. Questions, ask your shop guy, depends on engine.

 

When the truck needs to do a passive regen IT will kick the idle up to 1,000 rpm's on it's own. When it's done IT will drop it back to idle....

That how you know it's doing it....

 

Desiels run forever. But add emissions and you choke the engine unless you idle hot enough to support the emissions.

Generally I set them at 1200 for the night. In extreme low temperatures I'll set em at 1600 temporarily.

 

Idling is the kiss of the death.

 

I am pretty sure that all of the manufacturers advise against it. But they also know that it is going to happen. Any of the remedies that are built into the truck, higher idle speeds etc are stop gap measures. You will still do damage and incur higher maintenance costs. Balance that against the costs of an APU. Many fleets, particularly those who trade on an aggressive cycle(3-4 years) figure the next guy can worry about it.

 

Mostly to your wallet, though. Diesels are made to idle, provided the idle is high enough to achieve operating temperature. One reason I don't like idling in winter is because temps almost never get above 150°. I have a feeling the wife is going to start a few arguments come summer, though...LoL