Quote:
Originally Posted by slate
I'm winterizing a Fleetwood 39j motorhome for my brother in law. iw as told you have to dump 100 gallons of antifreeze in the tank to run through lines. there's gotta be an easier way. where is the pressure system located on these things.
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I don't know who told you that, I suspect an RV antifreeze salesman. Drain the water tank, pull the plug on the water heater. (outside in WH door) According to the plumbing, you can use a suction hose attached at the water pump, pour the antifreeze into a hose attached to the city water port, or pour a gallon and a half into the now empty water tank. (close the drain valves)
Check for the water heater by-pass or winterizing valves to isolate the water heater tank. Turn on the water pump and go to each faucet and turn on until the pink antifreeze shows at the faucet. Do this for cold and hot, don't forget any outside shower outlet and toilet sprayer. If you have an icemaker, dishwasher, or washing machine they also need to be drained as per manufacturer's instructions.
The leftover half gallon can be used to make sure the P-traps all have antifreeze in them, although running it through the faucets means most of the drains should be now protected.
If you have the owner's manual for the RV or can find one online, all of this should be explained.
An alternative method is to use an air compressor and an attachment that screws onto the city water port. Use 35-40 PSI compressed air to make sure all lines are blown out and free of standing water.
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