Well, a company I drove for, a reputable flatbed company with 300 trucks, had alcohol air dryers on every tractor. You could smell it when you disconnected the air lines.
Electric APUs have started gaining acceptance. These electric APUs use battery packs instead of the diesel engine on traditional APUs as a source of power. The APU's battery pack is charged when the truck is in motion. When the truck is idle, the stored energy in the battery pack is then used to power an air conditioner, heater, and other devices
Well, a company I drove for, a reputable flatbed company with 300 trucks, had alcohol air dryers on every tractor. You could smell it when you disconnected the air lines.
Yes but the air was being dried BEFORE it entered the actual airlines of the truck. It goes from the compressor to the drier then the air lines.
Electric APUs have started gaining acceptance. These electric APUs use battery packs instead of the diesel engine on traditional APUs as a source of power. The APU's battery pack is charged when the truck is in motion. When the truck is idle, the stored energy in the battery pack is then used to power an air conditioner, heater, and other devices
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The items on the dash are just what GuyJax said. I have the same thing on my dash of my 2012 Freightliner, but mine are labeled.