I've got 3 of the magnetic heaters usually for winter use that I usually use. (Theres always people driving all over the pits "warming up", it made me think that's a lot of expensive gas not accomplishing much. I've also been told that I squeak when I walk
). One 300 watt & two of the 200 watt units. I put 2 on the engine oil pan and the last one on the rear end housing. I just use 1 back there because I use Redline Super lite shockproof. Of course I can't use this on the Escort. I know theres the glue on blanket style but I've heard the adhesive isn't very good. Would be interested to hear other's experiences there.