The idea that a synthetic "lubricant" the consistency of water can be used to effectively lubricate, and more importantly, cushion the patrts of an engine with the clearances specified for stovebolts, is utterly ludicrous. The upper viscosity of a multi-weight oil is irrelevent, as the actual thickness of the oil film remains at the lower number, regardless of temperature or load. That can be tested by anyone open-minded enough to drill a test hole in a measuring cup and use a stopwatch to check how long a measured volume of various SAE number oils take to drain out. Of course, no one will do that, as it just might blow holes in their preconceived ideas and make them admit they're wrong.
Jerry
