STP DIESEL PACKAGE PACK CONTAINS - 12 X STP DIESEL TREATMENT 200ml BOTTLES SAVES FUEL STOPS SMOKE CONCENTRATED CLEANING POWER KEEPS FUEL SYSTEM CLEAN FOR REGULAR & BIO DIESEL SAVE FUEL BY KEEPING FUEL INTAKE SYSTEM CLEAN OF HARMFUL DEPOSITS FIGHTS RUST AND CORROSION IN FUEL SYSTEM REDUCES EMISSIONS, SMOKE AND NOISE IMPROVES COLD START PERFORMANCE EASY TO USE