Can I install a block heater pad directly on the engine?
Block Heater Pad
A block heater pad heats up the engine parts for quicker starts in cold climates. It achieves this by warming the fluids inside the engine thus improving the flow of the fluids.
You will want to install it on a flat smooth surface. Place it on the engine oil pan. Most of the heating pads have a peel and stick installation. Make sure to clean the surface of any oil or dirt before applying.