Gold Eagle ISO-HEET Premium Fuel-Line Antifreeze, Water Remover & 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 anti-freeze 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. Usage Directions: Twist off cap. Puncture seal. Pour ENTIRE contents into tank before or after filling with fuel. Bottle treats 20 gallons of fuel. Use with every fill-up in winter, and at least every 5,000 miles in summer to clean injectors. Removes water and condensation in warm, wet weather.