To Idle or Not to Idle? If So, How Long?

[Pete Masterson]

The DD manual with my Series 60 states: "cool down" and idle the
engine for 4 minutes before shutting down. (I have a small digital
timer clipped to my steering wheel.)

As a practical matter, when the oil temp is below 200 and if the
engine has been at idle speed for at least a couple of minutes, then
it's relatively safe to shut down the engine without damage.

If I pull off the freeway directly into a rest stop, then I set the
timer for 4 minutes -- check the temp and shut down when the timer
sounds. If I've been driving over relatively flat city streets at
very modest speeds, then I idle for one to two minutes before
shutting down.

While there are several differences between the 8v92 and the Series
60, the cool down of the turbo is similar on both engines.

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Mt. Airy, NC



On Oct 29, 2008, at 7:08 AM, Jack and Liz Pearce wrote:

> Howdy, Y'all.
> Puleeze settle this "discussion" that Jack and I are having.
>
> Question #1:
> Jack says the normal oil temperature is 230 degrees. Jack was told
> toturn the engine off after the oil temp gets down to 200 degrees.
> Thenone can turn off the engine without damaging the turbocharger.
> Is thistrue for our 8v92?
>
> Question #2:
> When we stop at a rest area to have lunch or for Jack to rest, I
> wantto turn off the engine and not burn that expensive diesel. What
> doesthe oil temp have to be, before we turn off the engine?
>
> TIA,
> Liz
> __________________
> Regards,
>
> Jack and Liz Pearce
>
> Fulltiming in a 1993 WLWB
> Summering in Buena Vista, CO