Iso-HEET Water Remover & Premium Fuel Line Antifreeze + Injector Cleaner is the premium gas-line antifreeze that absorbs up to 5 times the water of regular gas dryers. It is designed for year round use in all 2 and 4 cycle gas and diesel engines. Iso-HEET prevents rust and corrosion by getting the water out. This antifreeze can be used with every fill up in below freezing temperatures or whenever you want to absorb water from gas or diesel fuel. This product comes in an easy pour 12 ounce bottle.