Leaving Diesel Run
Should you leave a diesel run for awhile before shutting down, if so how long should you leave it run? I have heard you should leave it run to let the turbo cool down but what if you do not have a tur...
Forum Discussion
DanTheRVMan wrote:wolfe10 wrote:
Interesting-- been a very long time since I have seen a normally aspirated diesel on the road. What do you have???
And as already answered, with a turbo diesel the answer is "IT DEPENDS".
If you just climbed a 5 mile 6% grade and pull over in a scenic overlook, yes 3-4 minutes would be proper.
But, if you got off the highway and drove at low speed to the CG and checked in, the instant you get to your site turn it off.
As with most things, a little common sense goes a long way.
Different way to address the same issue is to cool the engine below 180F. Times will vary a lot depending on hills, ambient temp, etc.
BTW, Camp Frieghtliner suggested <180F
Dan,
This one confuses me. The thermostat(s) SHOULD control engine coolant temperature. So, unless the temperature is above thermostatic control (i.e. thermostat(s) wide open and some other part of the cooling system is limiting cooling capacity) the temperature should never drop below thermostat set temperature.
Said another way, you should be able to idle for a long time/way longer than you need, and if you have a 190 degree thermostat for example, coolant temperature will remain above 180 degrees.
If what they meant was to idle until temperature returns to thermostatically controlled temperature-- that makes perfect sense. So, if the thermostat is 180, then perfect answer.
