This may seem like an odd question but given the breadth of experience in these forums, someone may have run into this before. Is there any sort of oil or engine heater for an airhead? I've started commuting with my '83 R100RT w/ sidecar and this morning it was -11F. I am somewhat concerned whether the engine will start when I get ready to leave. All of the parking spots have outlets to plug in the vehicle engine heater. I don't want to just slap a silicone pad onto the oil pan. I figure that the battery tender may keep the battery charged and a little bit warmer and I already changed to lighter weight oil as recommended in the owners manual.

Any thoughts?