[CitizenM]

I remember putting a 100 watt bulb in one of those light bulb holders with a hook and laying it inside my car hood when the temps were really cold. That kept the engine warm enough to start up, which it did not do without the heat from that bulb. Guess I couldn’t do that with these new bulbs.

[steve86]

I remember putting a 100 watt bulb in one of those light bulb holders with a hook and laying it inside my car hood when the temps were really cold.

That's exactly what I did the last two weeks to keep our tankless water heater from freezing up.