Engine Exercise

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Joined
Jan 2, 2020
Messages
30
Location
Georgia
RV Year
2016
RV Make
Newmar
RV Model
Dutch Star
RV Length
37
TOW/TOAD
Jeep Grand Cherokee
We are at a location where we will be parked for the next 2 months. How often should we exercise the motor? Recommendations/advice?
 
Joined
Dec 8, 2020
Messages
33
RV Year
2000
RV Make
Beaver
RV Model
Patriot Thunder Princeton
RV Length
40
TOW/TOAD
2014 CR-V
Fulltimer
Yes
With diesel engines it is usually considered better to leave the engine off rather than turning it on for a short period. If you do want to exercise it then it is important to run it long enough so that it fully comes up to temperature. Unless you're prepared to take it for a drive that would necessitate quite a lengthy period of idling.
 
Joined
Dec 19, 2019
Messages
124
RV Year
2016
RV Make
Newmar
RV Model
Dutch Star
RV Length
37
TOW/TOAD
2020 Rubicon Eco Diesel
For two months, I don't think I'd worry about it. Mine sits for that long at least twice a year.
 
Joined
Nov 15, 2019
Messages
336
Location
SW Florida
RV Year
2017
RV Make
Newmar
RV Model
Ventana 4369
RV Length
43
TOW/TOAD
Tandem Tow dolly
Fulltimer
Yes
There have always been a couple different ways that folks go on this issue when it comes to diesel pushers. When I first purchased ours we sat in SW Florida for 4 months before hitting the road. A CG neighbor started his motor and generator (diesel) every month and let them run for 30 minutes. Another camper who owned/operated a towing company for big rigs let his DP sit for 5 months without starting anything. I found a couple other individuals who would take theirs out of the CG for a 10 or 20 miles drive in the middle of their winter stay.

I have always fell into the group that thinks it is better to take the rig out for a drive every couple of months if you are going to be sitting for 4 or 5 months. If you just start your engine and let it run you are not exercising the tranny, wheel bearings, brake drums, etc. I can usually find a reason for a drive, like going to get a recall taken care of some other maintenance/repair item done.
 
Joined
Nov 3, 2019
Messages
379
Location
Glendora, CA
RV Year
2019
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43
TOW/TOAD
2017 Ford F-150 Raptor w/AF1 Braking
Hmmm, my nice reply is gone. Let’s try again.

Diesels don’t need to be exercised and can be left to sit for quite a long time; certainly a lot longer than two months without any negative affects.

That said, you should be always be concerned with any storage about your fuel supply to make sure you have stabilizer/biocide/anti-gel as appropriate. Also, don’t forget that DEF has a short life-expectancy...some say around 6 months.

The same holds true about the generator diesel ENGINE. However, the reason that people advocate periodic running of the generator is to keep the stator dry and free of corrosion. This, of course, can be dependent on environmental conditions.
 
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