HYDRAMAXIMUS fuel injector cleaner, 1 Litre treats Up To 500 L, for cleaning diesel injectors performance enhancing diesel turbo cleaner additive for diesel fuel EGR valve cleaner diesel engines

Had a check engine light, obd called it as a a fault on an exhaust sensor, so after clearing the fault code, looked around for a good fuel system cleaner.Amazing stuff, put a couple of doses in half a tank of fuel. Before there was a slight unevenness in the running of the engine and although quick once pushed it lacked that initial urgency. Now it is smooth and more responsive.Not really surprising as it is a 16 year old Mercedes 320cdi, fortunately it is pre-dpf, no EGR and mostly motorway driving which all normally leads to a longer engine life, longer product life and so is why it is running well at 195,000 miles.Overtime, despite full scheduled servicing, the injectors start to block, particularly if you run it down to the bottom of the tank and on some of the supermarket fuels and you see a slight reduction in fuel economy, perhaps around 10%. This can kill a car, my last car had injector problems and often the injector proves impossible to remove as it corrodes into the cylinder head over time and so the car had to be scrapped, as uneconomical to repair.These type of products typically unblock injectors and decarbonise the engine but this one also raises the burn efficiency of the fuel resulting in improved performance and economy.Noticeable difference, definitely would recommend. Will report back later after more use and a longer journey test, but the results from the first two 30 mile outings look promising.Might ditch the detachable filler tube as this makes it easier to keep in the car boot, less likely to smell as more containable.Should make the engine last at least another 200,000 miles countryside and motorway driving. This will keep my internal combustion engine going until we have seen off the EV fad. Just need an additive now to clean the roads of ULEZ.Update, after of a couple of months of use it does not seem to improve fuel economy if your engine is already running running well. Probably this works best on engines that run short journeys and so clog up. Next I will try this on the wife’s diesel..

Unfortunately the package arrived damaged and had leaked a little bit - amazon being corteous provided a full refund for this so i essentially got the product for free.My engine is prone to sounding a little bit weird for the first mile or so while the oil heats up, ive always found the engine to run slightly smoother on V-Power but could not justify the £9 per tank extra, it's also not always easy to find a filling station that does V-Power or its equivelant so i started looking for additives.After research i came across Hydra and going by reviews it seemed to be the best offering.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. I wouldnt say there has been a major performance increase but after a few tanks the car does feel like its got a little bit more response to it and the mpg has went up by about 2 miles.HOWEVER, the DPB-100 from the same brand hydra seems to be an identical product, i think the only difference is the dosing. DPB-100 recomends the first tank at 1ml to 1l of fuel and then 2ml to 3l of fuel as a maintenance dose treating up to 2.5x the amount of fuel and is usually £2-3 cheaper per bottle than the maximus. I think DPB-100 is probably an identical formula with different dosing instructions - its not uncommon for businesses to use this practice.All in all, i think this will be one of the best fuel additives out there, only costs about £2 per full tank and probably provides better results than v-power does - i would highly recomend buying 5l bottles to save even more money.My tank is 60l so i bought 60ml bottles online and have filled them wth this stuff, i keep a couple in my car at all times, this saves the need to use the dosing bottle (which is awful) so takes away the inconvenience of trying to measure out the doses as well as preventing any spilliages or leakages that the dosage bottle is prone to (as i said, mines was delivered with a leak and this stuf STIIIINNKSSS)

The additive is fantastic and pays for itself. Added to normal diesel, even the dreaded supermarket diesel, the car starts quickly on cold mornings, goes further between regenerations, and keeps the fuel system clean. When I bought my Octavia VRS TDI second hand it was doing 42 mpg on the motorway. After using several different products, which did return a small improvement to about 44, I started using this product. The car now does 50 mpg and using the additive in each tank seems to continue to improve it.The downside, however, is that the bottle is shoddy. The additive itself has an incredibly strong smell and if you spill any of it on anything it'll need several washes to get rid of it. I was lucky enough to find the bottle leaking on my rubber boot liner. The spill was cleaned with a lot of Fairy but the smell has persisted for the last few months and can be quite dizzying on hot days.The bottle leaks. There is no two ways about it. Once you've broken the seal any pressure on the bottle will cause the contents to leak out. The issue is even worse if the container is not stored upright. The attached funnel is useless to you if you keep the bottle in your car because it will smell and droplets will splatter into the lining, leaving that strong smell behind. You're better keeping it at home or getting a graduated mixing bottle with a good seal to keep it in your car.I cannot overstate how the poor bottle design makes me very reluctant to recommend the product. Otherwise, it does what it says it will do.