Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

I’ve been using the STP Ultra 5 in 1 Diesel Fuel System Cleaner in my car tuning and workshop business for a while now, and it’s been fantastic. I use it on everything from standard diesel vehicles to high-performance tuning projects, and it consistently delivers excellent results.This cleaner tackles multiple issues at once — it cleans injectors, removes carbon deposits, prevents corrosion, and improves overall fuel efficiency. I’ve noticed smoother running engines, reduced smoke, and more responsive performance after use. It’s also incredibly easy to use and works with every diesel vehicle I’ve tested.Compared to other fuel additives I’ve tried, this one really stands out for its reliability and effectiveness. It’s a small investment that pays off in better engine performance, longevity, and fewer maintenance issues.For any professional working with diesel vehicles — whether in tuning, repairs, or general maintenance — the STP Ultra 5 in 1 Diesel Fuel System Cleaner is an absolute

Used on a 9 year old Mercedes SLC 250d 35k miles. What a marked difference after only 5 miles! Smoother acceleration, particularly noticable at setting off. Much quieter and smoother idle. Feels like a different car. Product is utterly amazing. Throttle response is definately smoother and linear. I will buy again in 4 or 5k. Thank you.

Seems to have fixed 80% of the issue.Car was kangarooing on acceleration. More intermittent now, will continue to use.

I have had consistent problems over the past three years with a clogged filter on my diesel Alfa Guilietta 2.0 which has ended up with the engine shutting down to its restricted speed mode. The only solution was to use Supreme+ Diesel at 20p a litre more than basic diesel that has double the detergent additive than regular diesel and always driving in a lower gear so that the engine was over 2000rpm. The problem tended to resolve after a tank and a half of fuel was used, a distance covered of around 750 miles. STP was recommended, so I filled the tank with basic diesel and emptied a bottle in. There was no immediate result, but after 200 miles of mainly slow stop/start driving everything suddenly cleared and the engine revs freely. I am so chuffed with this that I'm tending to use it once every six months or so as a regular part of the maintenance. Highly recommended.Addition: The Stop/Start mode on the car has not worked for around 8 years and and now it does! Magic.

Seems to do what it's meant to.

Put it in diesel tank, filled car with diesel, I felt car engine sounded better, got more mpg as a bonus.

Very good, could see an improvement in performance.

I normally use Wynns system 3 cleaner for the wife's 2014 S-Max and i have never had any issues. Decided to give this a try as it was a good price and read a lot of reviews stating it works wonders.With the Wynns product i would normally go to the petrol station and add the product just before filling the tank. I tried this with this product but could not get it to go into the tank. Ford's typically have a capless filler (no fuel cap just a flap that is pushed back by the nozzle during refuel) With the wynns product the bottle mimicked the fuelling nozzle and opened the flap. For some reason the STP product would not open the flap even though it looked similar to the wynns bottle. As a result most of the product went on the floor whilst i was trying to get it into the tank. I had to locate the adaptor to get what was left in the bottle into the tank.I will stick with the Wynns product in the future.

Uso da parecchi anni questo multi pulitore e devo dire che è uno dei pochi prodotti di questo tipo che funziona veramente il mio motore diesel ha 170000 km e fa un pò di fumo solo se ci spingo forte e dopo i 3000 giri però bisogna usarlo costantemente io lo metto ogni 15000 usando anche il prodotto da aggiungere all'olio motore. STP è uno dei pochissimi produttori di additivi che li testa in pista prima di immetterli sul mercato!

Fotografa bakıp ürünün yenilendiğini düşündüm. Ama alakası yok. Eski ambalajla geldi. Ürün zaten çok iyi bir ürün. Kullandığınızda aracınızın nefesinin açıldığını hissedeceksiniz. Rahat çalışma, vuruntu azalımı, ses azalması, yakıt düşmesi. 4 depoda bir mutlaka kullanırım. Aracımı 2013 te sıfır almıştım. Şuan 300 bin km de. Ne enǰektöre ne partikül filtresi nede motorumdam sorun yaşadım. Resmen aracın ömrünü uzatıyor. Ayrıca önemli uyarı; Dizel aracınız için opet, shell, total dışında başka bir yerden mazot almayın. Yoksa enjektörleriniz büyük bir masraf açabilir size.

Yakit tuketimi konusunda 0.3 litre civarinda katkisi var, ciddi boyutlarda olmasa da kabuk edilebilir duzeyde. Motorun devirlenmesi ve canliligi da artti. Uretici firma 6500 kilometrede bir 50-60 litrelik yakita takviye edilmesini tavsiye ediyor. İşe yaradigini soyleyebilirim.

Come da offerta d'acquisto. Prezzo concorrenziale. Consegna effettuata nei termini. Venendo all'aspetto "tecnico": non ho notato consumi inferiori (è anche vero che il clima è rigido e che tengo accesi plurimi accessori che fanno lievitare di per sé il consumo di carburante) né maggiore brillantezza (la mia vettura ha già 190 cavalli...). Confido nella pulizia e maggior lubrificazione di iniettori e altre parti meccaniche in movimento, di cui, ovviamente, non posso conoscere lo stato d'usura.

ürünü ve diğer stp katkı ürünlerini yıllardır aracımda kullanmaktayım herhangi sorun olmayan araçlarımda önleyici olarak kullandığımdan faydası konusunda net bir şey söyleyemem ama zararı hiç bir şekilde olmadı, kanıtlayamam ama :) faydası olduğunuda düşünüyorum, stp ürünlerine amazon satıcılı olarak ulaşmak güzel inşallah devamını getirirler.