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Old 08-31-2017, 10:05 AM
pmcski pmcski is offline
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Winterizing Heater in a Prostar

I have a 2016 Prostar and wondering if anyone has had any experience winterizing the heater. This will be the first year I will be doing it and looking for some guidance/suggestions for doing it. Thanks in advance!
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Old 08-31-2017, 10:12 AM
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Unhook both hoses from the engine. Put a funnel in one hose and pour antifreeze through it until it comes out the other hose. This may require you to help it through the heater coil with a little light pressure. Reconnect both hoses to the engine and close the valve that sends water through them. Then run antifreeze through your block.
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Old 09-01-2017, 12:14 AM
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I blow my out, first with lung pressure which is easy at first, and then with the air gun on my compressor. Then I leave it open to the air. Never had a problem in 8 years in -30 degree temps.
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Old 09-01-2017, 10:04 AM
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Quote:
Originally Posted by wheelerd View Post
I blow my out, first with lung pressure which is easy at first, and then with the air gun on my compressor. Then I leave it open to the air. Never had a problem in 8 years in -30 degree temps.
Same concept as dry block - Certainly works - I do both, blow out water, blow through anti-freeze Hook it back up after
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Old 09-27-2017, 04:48 PM
pmcski pmcski is offline
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Thanks guys. Where would the hoses be located on the engine?
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Old 09-27-2017, 05:43 PM
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I don't know how they do it on the new prostar engines, but on my 98 there was a valve above the thermostat housing to be able to turn off the water flow to the heater core that you disconnect and the other end was near the thermostat housing. Disconnect both ends and add antifreeze as I described.
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Old 09-27-2017, 10:49 PM
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Some also have the return line going into the draw side of the water pump. And then . . . some of us have inserted a Y into the raw water inlet hose to help improve circulation at low rpm's.
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Old 09-28-2017, 02:31 AM
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Winterizing Heater in a Prostar

Disconnect both hoses and use a shop vac to suck the water out....then drop the open hose into a gallon container of rv antifreeze and let the shop vac empty the gallon of antifreeze.
Anything left in the heater is pure antifreeze now.
Hook the hoses back up and hope spring comes soon!!
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