Don't use the sugar, wine, rubbing alcohol, methanol, etc. In fact, if
you use just plain water, regardless of freezing concerns, long enough,
you are going to have corrosion problems. The odd-ball additives you
mention may have additional consequences as well, possibly forming
deposits on metal surfaces and adversely affecting water pump,
thermostat, etc.

However, interestingly enough, a can of pepper, though not soluble,
_may_ temporarily stop the leak. I wouldn't recommend it except
in an emergency, though. Sooner or later you will have to fix or
replace the radiator. Seems like a good use for a charge card if you don't
have the cash.



--
Contentment makes poor men rich. Discontent makes rich men poor.
--Benjamin Franklin

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf.lonestar.org