One 8oz. "ONE SHOT" bottle treats 30 gallons of diesel fuel. Performance Formula®, is Stanadyne's premium, multipurpose, all season diesel fuel additive that tackles virtually any diesel fuel related problem. The benefits that Stanadyne’s Performance Formula provides include: 1) Upgrades and stabilizes fuel by reducing sludge and fuel tank contaminants; 2) Cleans and protects fuel system components; 3) Removes varnish and other deposits to prevent plugging; 4) Increases fuel cetane for better starts, increased power, and improved fuel economy; 5) Provides lubricity to reduce wear caused by low sulfur fuels; 6) Protects against corrosion with an alcohol free formula; 7) Helps remove water from fuel; 8) Provides hot and cold weather protection; 9) Reduces the cloud point and pour point of fuel for winter protection. Stanadyne’s Performance Formula fuel additive eliminates the need for expensive "premium" or blended fuel and is your insurance against poor quality diesel fuel. There are 24 "One Shot" bottles in a case. Feel free to call our parts department with any questions at (800) 891-8038.