FYI 100% antifreeze will freeze above 32 F. also froze the water in my engine a couple of years ago......4 years later the engine blew....I see a connection!

If you can, place a 100 w light bulb in the engine compartment on cold nights.

methanol (fast gas, dry gas) poured straight down the carburator was a great way to get the engine started. Never had good results with the ether sprays although I felt better after using them