PRI-D DIESEL FUEL TREATMENT 16 OZ. BOTTLE. PRI-D IS A SUPER CONCENTRATED, COMPLETE FUEL TREATMENT THAT IMPROVES ALL DIESEL FUELS AND KEROSENE, ENABLING THEM TO PERFORM TO MAXIMUM POTENTIAL. PRI-D'S INDUSTRIAL STRENGTH, ENHANCED THERMAL STABILITY CHEMISTRY REACTS WITH FUEL UPON CONTACT, AND PROVIDES MULITPLE BENEFITS: * ENGINES PERFORM BETTER AND LAST LONGER * INCREASED POWER AND FUEL ECONOMY Replaces: STIHL 1123-195-0400