Engine Heater Worth it?

[brian325is]

Block heaters are necessary in very cold climates. Cars left outdoors in northern ontario won't even turn over let alone start without one. The best kind are the ones that replace the frost plugs, not sure if that is an option on a Porsche but the magnetic ones help. Never heard of a rechargeable one.

[brian325is]

One thing I forgot to mention is that you need a metalliic surface for the magnetic one to attach to. Our pans are aluminum and will not stick. Not sure if there is another spot to attach to.