Retard switch
My neighbor just bought a new 2013 Fleetwood Expedition 40X with a 360HP Cummings and Allison transmission on a Freightliner chassis. We were talking about the "Retard" button and he said the owners m...
Forum Discussion
Having operated charter buses over 25 years the retarder worked off the transmissiom once you engaged the retarder switch. The latest coaches had a small stick shift to downshift as you needed it to keep from overheating your brakes. Turn it off when you level off as it will overheat your transmission oil and in turn overheat the engine. Also, turn it off in the rain. I knew a driver that left it on on a curve while it was raining and when he backed off the acclerator the transmission downshifted and he lost control of the bus and wrecked. All in all they're a brake saver in the mountains. Good luck.
