flanso, do you need those a lot in Tampa?? lol!
Is it getting hard to find a spot to put magnet heaters on, as engines and oil pans are often aluminum now? Or do you have miracle "aluminum magnets"?
OK, the ultimate heater story (I am sure that there are better ones but somebody has to start) - Colorado skiing, 1988.
I had my car ready to go, but when I arrived at home to leave my teenage children had the wife's 83 Escort wagon packed, ski rack on, skis on, etc. (Why?? It had a tape player, my car did not) Knowing that the car had a very weak 5 year old battery, I packed the Coleman single burner stove and headed out.
Cold weather struck the second week, -30f or colder, remarkably the Escort started - ran two seconds and stalled. The old battery could not crank it a second time. I slid the single burner under the oil pan - that model had a huge aluminum finned pan... set it to "incinerate" and we walked to breakfast. Returned 30 minutes later, turned the key...SUMMERTIME!!
Now for those that wonder, the oil pan was very thick cast aluminum, and of course held on by lots of bolts. I could still put my hand on the part the flame was touching - it would be very hard to overheat the oil on that model and the heat was conducted very well up into the block.
Now, I bet some of you have used much more bizarre methods... fire em up, I will be watching!!