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jtaylor0521's avatar
jtaylor0521
Explorer
Jul 30, 2013

Diesel engine running hot at 58 mph in the mountains

I have a 2005 Monaco Cayman 37' with a 300 hp cummings engine. Yesterday was the first time we have encountered mountains. I was running in 5th gear at 58 mph up and down the hills on I40. I notice...
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Executive45's avatar
Executive45
Explorer III
Jul 31, 2013
Cummings is a city in Georgia!!..:B:B....just sayin....Dennis

BTW..Maintaining correct RPM is much more important when climbing hills than MPH...find your engine's sweet spot and maintain that RPM and forget about the MPH....Dennis

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