Garage heat

Here in the bowels of the Midwest (Chicago area) winter can be a Really Big Deal. So much so that it puts the binders on any serious work from mid-November through May, give or take depending on unseasonably warm or cold weather. My 2-1/2 car garage is un-insulated, unheated, and wired for 15 amps/110V, and fuses at that. Looking to find a reasonable solution for heating while I'm out working during the winter months. Given the wiring issues, I'm thinking electric heat may be out of the question for the immediate future. There is no provision for natural gas, either...which leaves me with very few options. And I don't want to get fumed out by a kerosene heater either. Anyone had good luck with a propane-fired heater or electric infared heaters that don't draw a lot of wattage?

Park a big truck in your driveway and put the radiator inside your shop. Run the radiator hoses from the truck engine to the radiator inside your shop and leave the engine running. The big truck radiator with 200 degree water in it will warm your garage up in a hurry and the fumes will all be outside.

Another option is to invite a bunch of friends over to work on your car. If you have about 20 guys working in the garage at the same time it will warm up pretty quick. After an hour or so you might even need to crack the window open for some fresh air.