Check the listing for details. Stanadyne Performance Formula Diesel Additive 2 PK - 1/2 Gallon 38566. Condition: New. Listed at 74.00 USD. Stanadyne Performance Formula® protects your diesel engine and restores engine performance. The detergency and cetane improver in Performance Formula will help restore fuel economy, increase horsepower and torque. Restores/Increase Horsepower – detergents clean deposits in the injection system resulting in improved combustion, better acceleration, power, and torqueReduces Fuel Consumption – independent tests show an average of 4% improvement in MPG and gains up to 9.6%Cetane Improver – improves combustion resulting in better engine starting, smooth running, and reduced engine noiseMeets all engine fuel system requirements and will not harm exhaust aftertreatment systemsReduces Emissions – reduces Smoke and ParticulatesCleans and Protects – detergents and deposit modifiers help protect injection pumps, injectors, nozzles, etc.Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur and other low lubricity diesel fuelsStabilizes Fuel - keeps fuel fresher and protects against formations of gums caused by oxidationCold Weather Protection – improves diesel pour point up to 40°F (22°C), and cold filter plug point by up to 25°F (13°C), depending on base fuelCorrosion Preventative– Corrosion inhibiters will protect the fuel system from rust and corrosionHelps Remove Water – special demulsifiers cause tiny water droplets to come out of suspension/emulsion, so the filter/separator can more effectively remove waterContains No Alcohol – avoids corrosion and accelerated wearSpecially Formulated for use with ultra low sulfur diesel fuelCan be used with Bio Diesel Fuel up to B20 (20% bio content approved ) – increased water separation shown in bio content up to B20