MotorKote Heavy Duty Oil Stabilizer 32-Ounce 100% pure petroleum product increases oils viscosity and is safe in all gasoline and diesel engines while adding lubricity to any type of oil. Using regularly will help extend engine life, resist thermal breakdown, lower oil temperatures, raise oil pressure and reduce oil consumption and improve fuel economy.  Cold Fusion Technology is an advanced pour point depressant that allows for better flow and performance during lower temperatures.  Directions: Engine oil crankcase: 1 quart with every 4 quarts motor oil. Frequency of use: Every oil change.