Lucas, Gallon, Heavy Duty, Oil Stabilizer, For Preventative Maintenance, Eliminates Dry Starts & Wear, Extends Oil Life & Lowers Oil Temperature In Any Engine, Gas Or Diesel, It Raises Oil Pressure, Stops Smoking, Leaking, Knocking, & Blow By In Worn Engines, Eliminates Noise, Overheating, Leaks & Wear In Gear Boxes.