Race Gas Diesel Performance Plus is the only fuel additive on the market designed specifically for diesel and bio-diesel performance. This concentrate raises the Centane level by full 14 numbers, increases throttle response, improves oxygen content for a more efficient burn, and lubricates fuel system components and cylinder walls. Race Gas also adds a detergent package that keeps injectors and valves clean. Want to try RACE-GAS DIESEL ? Start with a single can. Make high energy, high octane Deisel fuel when and where you need it. Raises the Centane level by 14 numbers from Diesel Pump Fuel.