Diesel Injector Cleaner 200 ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

Ive been having problems with white smoke coming from my vauxhall zafira diesel on start up and on short journeys , could even smell smoke In the cab at times , also had a glow plug warning light , took it to the local garage who said I had a problem with one or more diesel injectors ,said it could be a strip down job , lots of time and money , were reluctant to even work on on it !! bought this STP Diesel injector cleaner added it to the tank and the results were almost instantaneous, no smoke on start up , no smoke while driving and the warning light has gone out ! car is also running much better , its Day 5 now and everything still ok , well worth a try ! it worked for me !

I'm very positive surprise. Excellent product. After used my engine work nice and smooth. Recommended

I've used this on several diesels over the years and it does work. Improves fuel economy and cleans out dirty injectors. Less efficient on common rail diesels and you are better off using a more premium refined fuel but for older diesels works well. Also very cheap. It took 2 bottles in each tank full to eradicate acceleration flat spots.

The STP Diesel Injector Cleaner (200 ml) is a concentrated maintenance treatment specifically formulated to restore the performance and efficiency of diesel engines by tackling the carbon deposits that naturally build up over time. In a diesel system, even small amounts of residue on the injector nozzles can disrupt the precise, atomized spray pattern required for clean combustion, leading to sluggish acceleration, rough idling, and increased exhaust smoke. This cleaner works by dissolving those stubborn gums and varnishes in just one tankful, often providing a noticeable improvement in engine responsiveness and fuel economy within the first 50 miles of driving. The application process is incredibly simple and designed for DIY maintenance without the need for tools or mechanical disassembly. For the best results, you should pour the entire 200 ml bottle into a nearly empty fuel tank just before filling up with diesel; this ensures the additive mixes thoroughly with the fresh fuel as it enters the tank. A single bottle is typically rated to treat between 50 and 60 liters of fuel and is fully compatible with all standard diesel engines, including modern common rail systems (DI and IDI), as well as bio-diesel blends. It is also safe for use in vehicles equipped with Diesel Particulate Filters (DPF) and catalytic converters, as it burns cleanly without leaving harmful residues behind. Regular use of this injector cleaner—ideally every 3,000 miles—can serve as a powerful preventative measure against long-term engine wear and expensive repair bills. By keeping the fuel delivery system clean, you not only maintain the vehicle’s original power and "pick-up" but also help it pass emissions tests by ensuring a more complete and efficient burn of the fuel. While it is particularly effective for older or high-mileage vehicles that may have years of accumulated buildup, even newer engines benefit from the added lubricity and corrosion inhibitors. Overall, it is an affordable, "pour-and-go" solution that helps keep your diesel engine running smoother, quieter, and more economically.

It seems to have done the trick, added it to about 50lts of diesel and done a few decent runs in the vehicle and seems to be starting from cold much more cleanly, my vehicle was initially spluttering into life from a cold start been to the dealer a few times and they couldn't find anything so thought I'd try this and the last two or three mornings when I've started it it starts cleanly so I'll monitor the situation and see what happens but so far so good (just a footnote I always run my vehicles on branded fuel so didn't think it was down to "supermarket stuff", happy customer would purchase again if needs be.

Made a big difference to my morning startup, highly recommended

I have used this and similar products on and off over the years and they have definitely worked, unfortunately i have noticed no difference with this product. That does not mean it isnt working, it could just mean my fuel system is clean.

I put in my campervan ,good stuff fully recomended to use i defnetly buy again

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Fait très bien son boulot

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Parece que fue bien, el tiempo dirá. Tenia problemas de injector, y ahora parece que funciona mejor, difícil de valorar.

Prodotto ottimo mi a risolto il problema sulla valvola E G R con spia motore accesa dopo uso spia motore spenta tutto ok.