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When Should I Use Overdrive on My Motorhome?
by Anonymous
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How to Properly Use Overdrive in Your Motorhome
When to use overdrive in a motorhome?
ANSWER: Hi since you do not tell me whether your motorhome is powered by Gas or Diesel or its make, model or year; I will have to speak in general terms on using overdrive.
Overdrive is basically just another gear in your motorhome's transmission. Overdrive is a large gear in your transmission that when used properly can increase fuel mileage especially on the flat surface and highway driving conditions.
When you have overdrive turned on, your motorhome's transmission will automatically switch to that larger (taller) gear when it can. Because the gear is larger the engine has to use fewer RPMs to keep the motorhome moving down the road and fewer RPMs means less fuel usage.
If you have a newer motorhome you can normally leave the overdrive activated and the transmission will take care of switching back and forth to overdrive when it should. If your motorhome is from the early 90s or older you may want to switch the overdrive off when climbing hills. Because some of these older transmissions sometimes struggle to keep the motorhome in the proper gear for the conditions when climbing hills the motorhome could start lugging or using the higher gear when it shouldn't which is hard on the engine and transmission.
Even in newer motorhomes, you should turn off the overdrive if you hear your motorhome's transmission constantly hunting for the proper
By turning off your overdrive when descending hills the transmission will not use the larger gear and the engine and transmission will help in reducing your downhill speed. In fact, the only time I deactivate overdrive on my motorhome is when going down large hills. In some cases on very steep and curvy downhill grades, I will manually switch the automatic transmission to an even lower gear to have the engine and transmission help in maintaining proper downhill speed and help prevent overusing the brakes and having them possibly experience brake fade.
If you have a diesel motorhome most of them come with some kind of engine brake just like on the big rigs that you see going down the road. The engine brake if operated properly can also be used to reduce downhill speeds.
The Bottom Line: If you have a newer motorhome you are safe to leave the overdrive on except when descending large hills.
I hope this information has been helpful.
Do you have any suggestions or comments on this topic? You can add them to this page by clicking on the "Click Here To Post Comments" link located near the bottom of this page.
Happy RVing
RVing Al
photo credit: Scania Group via photopin cc
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