Freezing nights, but still skiing ?

personally if you get the good premixed antifreeze from west marine, purple or green stuff your good to go, it's non-toxic, prevents rust, lubes and you don't have to drain it come spring just let it pump out when fogging and tuning up the motor for the season. Much easier then trying to get the mix right and I don't acgree that it won't freeze if used straight. Guess you could throw some in the freezer and try it out, if it gets slushy then it will freeze given enough temp.

I sucks training the newbees every year, oh wait their not new,

Good info, wish I could get by with the light bulb in the motor box, you never know up north if it's going to be -10 for a week or 0 for the month. And the northeners across the border in the sticks, I can only imagine how cold and for how long it stays around, then again their boats are winterized already I guess.

79Tique--depending on where you live, that might be a good idea. You might have problems if it gets below 10 F for a couple of days. At 50/50 you're good down to -35F. If you want to go through the ha$$le of mixing a 60/40 solution, you'll be good down to -65F. That's North Pole cold
I'd just dump two gals of anti-freeze and 2 gals of water in a bucket and run it through the engine.
By the way, don't forget to "fog" the engine, if you're putting it down for the winter. There are a number of post on winterization.
Like I said, I don't do anything special. I seem to remember JIM in Houston posting something a couple years back about his method of winterizing. Involved hoping in the boat and cruising down to a beer joint I believe.

I guess I should give credit where credit is due. I got the graph from this Article
Here's a couple of links on winterization:
Ski boat help
Discount Inboard Marine

You wouldn't believe me if I told you! Click the Discount marine link above, then go to their site and look up fogging oil.
I've never done it but I live where it's hard to breath after walking 1/2 mile in August

I see. Thanks for all your help jimbo. The temps end up getting down to zero once or twice a year in my area so I'll be putting in the mix, and it sounds easy so I'll fog too.
Thanks again.