Originally Posted by bustedbenz

For those really cold days, when the engine has been sitting all night at -40 degrees, and there's an emergency, WD40 can be used to aid in cold starting.

1. Hold WD-40 at two or three arms' length from the engine. Start a spray of the stuff out over the engine.

2. Use an aim-n-flame lighter in the other hand. Find the ideal distance between the can and the engine to produce a blowtorch effect over the engine without allowing the fire to travel backwards into the can. (The lack of oxygen SHOULD prevent an explosion anyway, but better safe than sorry.)

3. Blowtorch the engine surface for a while. Stop before plastic starts to melt.

4. Quickly dash around the car and turn the key. It should start with all that warmth.