STP Diesel Injector Cleaner (200ml). The difference will, in most cases, be noticed within 50 miles. 200ml bottle. STP Diesel Injector Cleaner. - 200ml bottle. - Suitable for all diesel engines including DI, IDI and common rail, and catalytic converters.
The STP Diesel Injector Cleaner is ideal for vehicles that require increased fuel system efficiency and emissions treatment due to engine wear.
