Check the listing for details. STANADYNE 38566 Diesel Performance Formula Additive 64oz - 1/2 Gallon. Condition: New. Listed at 44.00 USD. STANADYNE Performance Formula All Season Diesel Additive Part# 38566 One 64oz - 1/2 Gallon Jug (Treats 250 Gallons) 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 also be used with Bio Diesel Fuel up to B20 (20% bio content approved), increased water separation shown in bio content up to B20 Available Product Numbers and Sizes include: 38564 (8oz./237ml); 38565 (16oz./473ml); 38566 (64oz./1.9L); 38567 (5gal./19L); and 38568 (55gal./208L)