Proheat Products Fluid Heaters 156 FLUID HEATER 125 Faster/easier engine cranking in cold weather Easily installs in minutes, peel and stick application No tools required, no hoses to cut! Immediate engine oil pressure! e.g. Heats 6 quarts of oil from -40 deg F to +60 deg F in one hour Heats entire engine from the bottom up! Full three year warranty. Apply to METAL ONLY.