In article <nPeof.190943$tD4.firstname.lastname@example.org>,
> it's something I've just kind of wondered about for a very long time..
> nearly a decade ago, I worked at a gas station.. we had no antifreeze, but
> lotsa washer fluid!
> one day a guy strolls in from a truck aparently overheating in the street..
> wanting 2 gal of washer fluid.. to pour in his radiator.
> I thought it was nuts, but I suppose he was in a pinch.. but I always
> wondered, would it really hurt anything?
Washer fluid contains detergent, which will tend to foam a lot.
Long term use would be a bad idea, as it would tend to dissolve
internal metal in the engine. Probably will not conduct heat
quite as well as glycol solution, and does not have the corrosion
inhibitors common to modern antifreeze formulations. But in an
emergency, just about any liquid with similar viscosity will work.
Used to be a farmer nearby had an old Farmall tractor with a cracked
cylinder that he didn't want to spend any money on, so he put diesel
fuel in for coolant. Didn't use it for heavy pulling, just putting
around the farmyard moving wagons, scaping manure, etc. He used to
joke that if it caught on fire he'd just drive it away from the
buildings and let it burn. Worked fine for years.