Wynn's Premium Fuel System Kit contains Wynn's Ultra Power 3 500mL (61515) and Wynn's Petrol Inject-A-Clean 325mL (61001) Wynn’s Ultra Power 3 is professionally formulated to safely clean intake valves and fuel injectors. Wynn’s Ultra Power 3 is an easy to use, safe and effective service solution to fuel system contamination issues in modern engine management controlled vehicles. Wynn’s Petrol Inject-A-Clean is a premium petrol fuel treatment that has been developed for direct fuel injection and high pressure systems, whilst still being compatible with traditional injection systems.