I have one of those magnetic heaters, I used it for a old backhoe that was on my property. Also, I have a kerosene heater (for display only) that is intended for heating the oil pan.It has a mesh cylinder that I am guessing is sort of like they old Coleman lanterns. You were supposed to light it and put it under the oil pan. Never fired it up.

A day without laughter is a day wasted- Charlie Chaplin
When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired.
1948 Chevy 2-Ton