JerryandSusie wrote:
I just purchased a 2017 Ram 2500 Cummings Diesel. My owners manual says that when I come off the highway I should let my engine idle for 5 minutes and if I'm city driving 1 minute of idle should be enough before shutting it off. I'm assuming that about a 5 minute warm up would also be plenty of idle time. If I idle more than that and it begins to annoy you don't be afraid to say something to me. We are all out there for a good time. Happy Camping to all.
J and S:
Spend some time on one of the Ram (diesel) forums to learn more about your CTD !! (Example: Turbo Diesel Register - "TDR" - and, there are several others)
As others have already posted - the *cool down* idle to to allow the turbo to cool down after *working* hard (as in towing/hauling a load on the highway, at "speed") - and generating high temps.
If you drive for a while on city streets (or?) at slow(er) speeds and load - it's cooling down, and the cool-down idle is not needed.
The suggested idle(ing) does *not* apply to start-up.
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