Ya, mine too. I'm on a well and that water comes out COLD! I use one of those CAMCO winterization kits and never had a problem. I did notice that with my old boat with a small block the small diameter hose supplied with the kit was good enough. With a Big block I had to replace the feeder hose with a larger diameter hose. Warm it up, open the AF valve, close the water valve and wait till pink is coming out the exhaust.

The t-stats will not be open, Thats why you have to pull the plugs from the block and the exhaust to get rid of the water that will be trapped in there. You will not get all the water out by just flushing through with antifreeze. And we all know that any RV antifreeze, even slightly dilutted, will freeze!

The biggest thing is to get the water out of the block at the bottom drains. For my area especially, On a river when you have alot of sand. This will plug up some of the drains once in a while.