STP's NCT Pre-Test pack for Petrol Engines combines the high strength cleaning action of STP Fuel Injector Cleaner, with the keep-clean properties of STP Unleaded Petrol Treatment. One treatment helps unclog injectors, quickly dissolving deposits to improve performance and help reduce fuel consumption. For best results add STP Fuel injector Cleaner to a full tank - its super concentrated cleaner helps remove power-robbing deposits from all fuel injection systems.
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