SX370 sx370 FUEL INJECTOR CLEANER FORMULATED FOR TODAY'S MODERN FUEL INJECTION SYSTEMS THAT REQUIRE MORE CHEMICAL MAINTENANCE THAN CARBURETED FUEL SYSTEMS. EVEN THE SMALLEST BUILD-UP OF GUM OR VARNISH OR THE PRESENCE OF CORROSION IN THE INJECTION SYSTEM CAN AFFECT THE INJECTOR SPRAY PATTERN CAUSING ROUGH IDLING, HESITATION AND POOR PERFORMANCE.