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Old 06-08-2014, 10:48 AM   #1
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Diesel engine question

We have a 2011 Solera Freightliner diesel. I wanted to ask how long is too long to keep the engine idle. We are traveling through the summer and need to run the AC during the day for our driver. (We use our RV for work) Instead of running the Generator we were wanting to keep the engine going with front AC. Good idea? Or Bad?

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Old 06-08-2014, 11:05 AM   #2
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Unless you have the high idle system which prevents soot from forming, I would not do it. The particle filter in the exhaust system can become clogged and they are a high dollar item. The particle filter does go through a regeneration cycle when needed, but you will still reduce the life.

Others may have more knowledge concerning this issue.

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Old 06-08-2014, 11:09 AM   #3
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It won't be an issue, but it's horribly inefficient. The big engine will consume more fuel than the genset plus it will regen more often which takes more fuel still.
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Old 06-08-2014, 11:13 AM   #4
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Thanks for the response! Yeah, we are just trying to figure out the best way to keep it cool during the day.
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Old 06-08-2014, 11:14 AM   #5
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I've owned 4 motorhomes and all of them have been diesel. I strongly recommend using your generator and the coach a/c, not the engine/ac to cool your driver. I know you see truck drivers idling all night long in some truck stops/rest areas but it IS NOT a good idea ( and most don't even own the truck their driving). Too much idling builds up soot in the engine and the diesel fuel can actually "overload" the engine to the point where it "washes" the oil from the engine cylinder walls which is not a good thing. A minute or two warm up is all that's necessary on a cold morning, otherwise, start it and slowly get on your way. By the time you hit the highway, the engine will be all warmed up and ready for higher RPM's!
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Old 06-08-2014, 12:32 PM   #6
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Thanks! Will definitely run the generator now...

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