Yup crazy!! But My father would take the ash pan from the kitchen stove and fill it with red hot coals and slide it under the oil pan of the family car. Taking care to not pump the gas or try to start it first to keep any gas off the engine block. In a couple of minutes you could hear the moisture in the bottom of the oil pan begin to crackel and pop. Slide the ash pan out of the way with a garden hoe and give her a whirl. Another thing was to take a quart can of oil (it used to come in metal cans) open it and heat it to boiling hot before dumping it into the engine.