LX4 Lubricity Extreme is a specially formulated fuel additive that increases your fuel's lubricity up to 56% to combat the harmful effects of "dry fuel." With LX4 Lubricity Extreme you can Increase the life span of your engine and protect your components for years to come. We're confident about our ingredients so that you can be, too. With Hot Shot's Secret LX4 Lubricity Extreme, you can prevent unnecessary scarring of your fuel system's key components. Our formula works with ULSD to protect those parts and keep your fuel pump, upper cylinders and injectors running smoothly. LX4 works best with low-lubricity, ultra-low sulfur diesel (ULSD), and gasoline as a diesel fuel additive or gas treatment. Our formula is essential for farm equipment, semi-trucks, pickups include GM Duramax, Ford Powerstroke, and Ram Cummins engines along with other vehicles. Every bottle of our LX4 Lubricity Extreme is free from solvents and alcohol and is safe for all emissions systems.

• Adds Protection - Increases fuel lubricity by up to 56% for an added layer of protection that keeps fuel pumps and injectors from unnecessary damage or failure
• No Harmful Ingredients - LX4 is formulated without harmful solvents or alcohol making it a safe and effective fuel treatment for all systems and engines
• Extends Fuel System Life - Protects any fuel system from harsh ethanol or diesel fuels and maintains a smoothly working engine and fuel system, keeping it healthy for even longer
• Lubricates Upper Cylinder - Works with any ethanol or diesel fuel to lubricate and protect the upper cylinder and other key engine and fuel system components
• Versatile - Perfect for gasoline or diesel engines, LX4 can also be used with fuel stabilizers and fuel system treatments to keep your vehicle at peak performance