HYDRA MAXIMUS fuel injector cleaner, 500ML Treats Up To 250 litres, for cleaning diesel injectors performance enhancing diesel turbo cleaner additive for diesel fuel EGR valve cleaner diesel engines

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Just checked back on my records (I know I'm an anorak) it looks like you're about right with that ratio.

My 10 yr old diesel car had an "engine malfunction service now" warning every time I started it up and would not run faster than 25mph (limp mode? I Put the recomended 2ml per L into a fresh full tank of diesel and litteraly the noise that my engine normally eminated during the first few miles has dissapeared completely.The long and the short of the problem VW concluded was the poor quality fuel being used in the car caused fuel pump failure. If your car has one of those then you need something the same diameter as a forecourt fuelling nozzle else you can't get the Hydra supplied filling tube into the tank neck. The best he's ever had out it was 32mpg but on a run down to Manchester he got 41mpg - and is a happy bunny.

Car definitely is happier on super diesel and I want to avoid any inlet manifold buggerance if possible! Come join the discussion about sedan and sportbrake wagon performance, powertrain, modifications, classifieds, troubleshooting, maintenance, and more!

The material contained in the forums is submitted by the general public, and is not endorsed by Audi UK, or Audi AG. There is a significant difference in everyday driving as the car feels quieter, smoother and doesn't need to be worked so hard. Also, diesel fuels with cetane numbers lower than minimum engine requirements can cause rough engine operation. However, we cannot be held responsible for delays due to weather or other circumstances beyond our control.