Product Description: This universal hot pad heater is silicone covered, acid resistant, and pliable enough to use with most cars, trucks, and tractors. The heater pad is 4" x 5", 120V, and 150 watts. It is easy to install and can be used to warm your engine oil pan (2-5 quarts), diesel tank (5-7 gallons), hydraulic tank (1-5 gallons), and water tank (0-2 gallons) during freezing temperatures. This heater pad is designed to be used on cars, trucks, RVs, snowmobiles, tractors, generators and other equipment.