STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

Made a clear difference to my slightly rough diesel. I’ve used it twice and will now continue to, can’t hurt for this price and as I feel the difference it’s got to be good

Added this to my Ford Focus 1.6 Tdi with 140,000 miles on the clock after losing power going uphill and engine malfunction light coming on when accelerator pushed to floor. Added to half tank of diesel and all ok since. Used this before with same problem but added to full tank and took a while to rectify. Description on Amazon says protects for 300 miles but should read 3000. Engine malfunction suggests fuel filter fault but this is a quick temporary fix until car goes in for service.

My Vauxhall has frequently DPF troubles. I used this once and felt the acceleration improved substantially. I thinks this works on the injector as said and will buy the system cleaner later to keep my car away from the warning DPF light.

i had trouble in the mornings with hesitation and the feel like the van was choking itself up , friend of mine said probably your injectors , well i looked to see if it could possibly be something else more than the dreaded injectors , i saw that the filters sometimes can get caked with the poor quality diesel we use from supermarkets and this can indeed lead to blockage of injectors filters etc etc so i bought a bottle followed the instructions and waited , the first week nothing seemed to change and i thought and feared the worse , but read some other reviews and saw other people had tried a second bottle the next time the tank was near empty this time at the end of the second week the problems had gone, so i will now use a bottle every 3-5000 miles to flush through the system , obviously its not always going to work for everyone but if you have similar issues then for just over £5 a bottle its worth a try so i highly recommend it .

It works

Did the job perfectly. I have only used one of the bottles so far. My diesel engine started running a bit rough and felt like she might cut out when I was stationary at junctions. She's an old Kia Sorento. I figured before I booked her in for exploratory work, I'd add the bottle to my next tank of diesel and it worked. One day, when I put my foot down hard, I could see a puff of black smoke come out of the back of the car (after I'd used this additive) and have not had a problem since. I think it cleared whatever gunk was in the fuel system. I'll be using the second bottle in about 6 months time. I used the Diesel Injector cleaner first. I'll use the Diesel System cleaner next. Good price and super fast delivery. I've only used the injector cleaner so far and driven around 100 miles but the fuel economy has definitely increased and the engine noise has gotten quieter so i'm happy to recommend.

Didn’t really see a difference in how my car performed. Used in a high mileage golf GTD.

use this every 3-4 months, does what it says and i will keep using it.

Ottimo la macchina va benissimo anche dopo 2000 km dall'utilizzo. Consigliato.

ok

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Tja STP eben , Fehlerfreies Produkt

Aunque se equivocaron en el envío se solucionó rápidamente. El producto muy bien. Cuando lo puse en el depósito al los pocos kilómetros se notaba como el coche iba con más fluidez, más "alegría" teniendo en cuenta que son más de trescientos mil kilómetros.