Redex Diesel Cleaner is the nuts, get +15mpg on my TDI on a long run compared to standard diesel, well worth it.
Pros: +15mpg on long run
Reviews of REDEX parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
3.5
Manufacturer Ranking
-
8
Spare Parts
1
Country
USA
Spare Parts
You add a shot every full tank and it turns normal diesel into premium with added cleaners. This means your car is always running additives through it which makes a huge difference compared to the occasional top up of the supermarket stuff. It works out as pennies per tank, much cheaper than premium diesel and you’ll see all the benefits including better economy.
Pros: better economy, added cleaners
I use a bottle of RedEx every few tanks in my 2015 320d, which is on about 90k. It seems to have increased my fuel economy by about 5%, tested by doing the same 200 mile route many times.
Pros: increased fuel economy
Vehicle:
BMW
Mileage: 144840 km
If I had a performance vehicle, I might go for the premium stuff, but I don't, so I go regular. I chuck in a bottle of redex every 5 or so tanks, which keeps them clean enough.
Pros: keeps them clean
Try adding a bottle of redex to a full tank and see what happens.
You could always try your own additive in the tank, Redex or similar claims to clean fuel injectors and improve efficiency.
Pros: clean fuel injectors
Cons: others don't see difference
You're probably better running premium fuel and oil rather than using additives. Stick with Shell V-Power and Shell Helix/Castrol EDGE and ditch the Redex.
Pros: premium fuel and oil
Cons: ditch the Redex
Vehicle:
MINI
Redex fouls plugs.
Cons: fouls spark plugs
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Owner reviews of REDEX products
The REDEX brand is registered in USA. Official website is not specified yet.
In March 2026, PartReview recorded 8 reviews across 1 part by REDEX. Average rating — 3.5 out of 5.
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