Winterizing Question

It is open when the boat has warmed to normal operating tempature. to maintain the tempature, the thermostat must be open for cooling. I suppose you could remove the thermostat all together if you doubt it being open. -100 im sure can be found anywhere. we get it in 55 gallon barrels. good stuff

Catching antifreeze in buckets until the engine is hot sounds like an incredible amount of work for no reason. At the marina, we run the motor on water until it is all warmed up, change the oil, and then run it again. you can tell if the thermostat is open by feeling the housing until it is toasty. you can also generally assume that it is open after a while of running the motor. When you have determined the thermostat to be open, water to the engine is turned off, and 5 gal of antifreeze (-100F) is turned on and let run through the engine. while it is running through, we like to fog the motor. when the antifreeze is almost out, you fog the hell out of it and choke it out. finished. I do not understand why antifreeze is such a waste of money and unnecessary. I personally cannot afford to risk not draining the motor completely or something unforeseen happening and ruining the motor. a 100 gallons of antifreeze is a hell of a lot cheaper than a new engine.

Chris,
Go into the reference section and find the Chrysler manual. Download it as you should have it anyway. You'll find a section in it on layup and it will show you all the drain locations. However, the 318 has the typical plugs on each side of the block, one in each exhaust manifold and then one at the bottom of the RWP.

With all the water drained out, 0 gallons of antifreeze would be fine. Some drain only and have no problems. I only use about a 1/2 gallon per boat simply as a extra "just in case" there's some water still in a block. 5 gallons is just wasting money.