Downshift or exhaust brake?
I was just thinking after reading a post about gas vs diesel trucks where somebody mentioned they liked diesel because of the exhaust brake. I've never had a diesel, always gas. If I come up to a long...
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Me Again wrote:
Despite what 4x4ord thinks, the Cummins alone does very little at holding back speed on hills. That's my story, as I do own one!
What I think is that the Cummins exhaust brake is likely very similar to the Ford. I think downshifting alone will give you roughly 100 reverse hp at 3000 rpm and with the exhaust brake turned on there will be about 185 reverse hp. So if you are going down a grade with your Cummins and the engine is holding back the truck and trailer in 4th gear at 3000 rpm then you would likely have to drop to 2nd gear to get the truck to hold back that same load without the exhaust brake turned on.
