You can use Redex Diesel System Cleaner as often as you like to clean your engine’s fuel system and injectors. We’ve designed Diesel System Cleaner to be convenient and easy to use, so you can add a dose whenever you need to ensure long-term engine health and performance.
Typically, we recommend adding a shot of Diesel System Cleaner to your car each time you fill up with fuel. This will help you get optimal results to keep your car running at its best. Failing that, a shot of Redex once a month can help to maintain the engine during day-to-day driving conditions.