Redex Petrol System Cleaner Review FORD Focus Mk3 Estate (DYB) (07.2010 - 02.2020)
25.09.25
25.09.25
- @Graziana Venturi25.09.2025 12:18@T-JacksonAUTODOC expertRedex Petrol System Cleaner is a popular additive used by many car owners, including the Ford Focus. However, it's worth noting that reviews of such products are often mixed.
Expected Results
Running Smoothness and Idle:
- The most noticeable improvement will be seen if the engine has high mileage or is dirty. Redex helps clean injectors and valves, making the idle smoother.
Fuel Consumption:
- Don't expect miracles. If the cleaner restores the efficiency of dirty injectors, fuel consumption may decrease slightly, but the improvement will be minimal (1-3%).
Emissions:
- May help slightly reduce emissions due to more complete combustion (useful before a maintenance check).
Redex is best used preventatively to maintain system cleanliness rather than to address serious problems. The effect depends greatly on the initial condition of the fuel system.
Has anyone used Redex Petrol System Cleaner in their 2014 Ford Focus? I’m curious about whether it really improves mileage or helps with engine performance. Did you notice any changes in fuel efficiency, smoother idling, or reduced emissions?