After a hard pull on tow vehicle

Turtle n Peeps wrote:

GordonThree wrote:
Thank you for the information.

I did not realize a diesel was so susceptible to damage.

It's not. I've owned and designed turbo engines for over 35 years, both gas and diesel and never had a turbo problem. I wish I had some pictures of the turbo hot section so hot it was glowing orange. Never ever any synthetic oil either. These are also old oil only cooled turbo's with sleeve bearings and not the fancy water cooled ball bearing they have now days.

I've only let an engine idle maybe two or three times in my life. One time was when the water temp got to about 270 and EGT was about 1,400 post turbo. Things were a little warm that day. I have yet to see any coking in any of my turbo's I have taken off my engines.

I tend to error on the side of Cummins Recommendations in the Supplemental Diesel Manual that came with my Dodge Ram

Stopping The Engine
Idle the engine a few minutes before routine shutdown.
After full load operation, idle the engine 3 to 5 minutes
before shutting it down. This idle period will allow the
lubricating oil and coolant to carry excess heat away from
the combustion chamber, bearings, internal components,
and turbocharger. This is especially important for turbo-
charged, charge air cooled engines

Driving Condition-----Load-----Turbo Temp-----Idle time (minutes)
Stop and Go..........Empty........Cool..........Less than One
Stop and Go..........Medium.......................One
Highway Speeds.......Medium.......Warm..........Two
City Traffic.......Maximum GCWR.................Three
Highway Speeds.....Maximum GCWR...............Four
Uphill Grade.......Maximum GCWR...HOT.........Five





Besides it cost what maybe 12oz of diesel fuel to idle for couple minutes--------no down time/no harm-no foul