This is how we did it using pink RV anitfreeze with rust inhibitors.

1 - Push one end of 3/4" heater hose into strainer housing top inlet with water hose on other end (see pictures)
2 - Start engine and let run to get oil warm
3 - Change oil and filter (Fram PH16, 1 qt of Lucas Heavy Duty Oil Stabilizer, 1 gal Shell Rotella T 15W-40) and then restart to make sure oil pressure is OK
4 - Remove the brass water drain plugs from both sides and let drain
5 - Remove thermostat housing and t'stat
6 - Pour pink AF into t'stat opening until pink comes out plug holes
7 - Replace plugs and top off with AF (it took 1.75 gal)
8 - Replace t'stat housing and snug bolts (leave t'stat out)
9 - Put AF in bucket, remove water hose and run engine until pink comes out exaust (sucked up 3.25 gal)
10 - Remove pump and impeller

We keep her in a insulated quonset hut that rarely gets below 20 degrees. Last year it never got below 25.

If that motor freeze cracks, America will be beneath a mile of ice! Meaning that your engine is well winterized. Good work.

I hear of people draining the block, then pouring Pink Stuff in and thinking they are okay. No so. Lots of water trapped here and there to cause $$$ problems. You did it perfectly.

Jeff

whats all this talk about winterizing.you can do that after thanksgiving.
if i drain my block and run until its full with pink will that be good enough ?i drilled a small bypass hole in my tstats when i installed them.

tim

norm ,yes it will .i don't know how the newer 's are but mine is not insulated well .some people at my marina use heaters but i don't trust the dock power that well.i try to have it done by the time it starts dipping below 30 at night the boat is only about 4 miles from the va line.at the south end of the state you may be able to get away with that.
the fishing is suppose to be good for the next few months for big cats and stripers we are going to try some this year before we winterize.(if that four letter word that starts with "w"allows)

tim

Leaving a light bulb on is a pretty good way to reduce humidity in the engine compartment, but not for winter protection. One short power failure in mid-January and you are cooked. Well, perhaps, frozen. Use AF.

On another web site, where I dispense equally bad (but free!) advice, I counted the number of cracked blocks due to "Hey, it ain't gonna get that cold?" , marina incompertence, and other nonsense: 26! And that was in one year.

Jeff

Doug,

Hurricane lifting boat ½ mile inland ? Frozen block? Neither sounds like a good option but I think I’d opt for the latter But than the Ins. agreed upon value is worth more than I can get for it in today’s boat market. Frozen block not covered by Ins

Norm,

Big s Live On

You are welcome. Most of the info was learned here at marinetteboat.com.
We keep a 150W infrared lamp on during the off season to raise the ambient temp a few degrees and lower the humidity in the engine compartment.
It won't be long before that 4 letter word with an 's' comes.....