Redex Diesel Fuel System Cleaner sits in the brand’s everyday additives range for diesel cars, competing with cleaners from STP and Wynns. It’s intended for routine maintenance rather than fixing a fault, helping keep injectors and the wider fuel system cleaner over time, which can support smoother running and more consistent performance if your car mainly does short trips.

Who is this for?

Best suited to diesel drivers who want a simple, occasional “tank treatment” to help counteract deposits that build up with stop start driving. If your car is already showing warning lights or has a persistent misfire, a bottle additive is unlikely to be a cure, you’d be looking at diagnosis and possibly a professional clean.

  • Pack size: 2 x 250ml, useful if you treat the car every few fill ups or run two vehicles.
  • Use case: general fuel system cleaning for diesel engines, aimed at ongoing upkeep rather than one off repair.