Product reviewsSTP Diesel Injector Cleaner - 200ml

great value

I use this all the time in my car and find it keeps the engine running well and efficiently, its easy to use even for me, the garage who do my yearly service recommend it to keep the jets clean and the engine running sweet as mechanics say. They say its important for any new diesel engine as this fuel can be quite dirty depending on where you buy, very good value. Read full review...

Verified purchase:  Yes | Condition: new | Sold by: motorply

STP really works

I am using STP for a while, and after some time my car`s fuel consumption is really great, I feel the car is going very well, I am sure it cleans the system effectively.
Someone adviced another great product, but it was not working for my car, so I got back to STP, and everything is much better again.
So I would not try anything else, just STP.
But one thing is sure, it has to be used regularly. This one only needs to be used every 3000 miles, which is great.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: partsdaddyuk

Good Stuff

Put some of this into my flagging Freelander 2 which was suffering from poor performance and MPG.

Did notice an improvement but have since found other slightly more expensive brands gave the boost that I was looking for.Read full review...

INJECTOR CLEANER

I`ve a jag diesel sport, running fine. Blowing the usual black smoke out at times. The last 2 fill ups i`ve used V power diesel, I filled up again added STP Injector cleaner , When to the Lakes 250mile round trip. The car is running a lot smoother and more performance. No black smoke. Is it the V power or the injector cleaner Read full review...

Verified purchase:  Yes | Condition: new | Sold by: eurocarparts

It works !

I had a problem with injector as it was smoking on idle and after driving the car for a day it stopped smoking ! It does miracles . Saved me a lot of money . Just in case I am using it with a second full tank so it won’t happen again any time soon . Thank you ! Happy customer Read full review...

Verified purchase:  Yes | Condition: new | Sold by: fastcardirect_w...

diesel additive.....

ive used this product before,it works really well...my 04 plate diesel needs it from time to time...just to help with occasional puff of black smoke on acceleration....

Verified purchase:  Yes | Condition: new | Sold by: save_and_drive

great product

Actually yes!!! I put bad diesel in my car (Texaco) Coop store and followed by dirty station Shell after that, and driving through city ain't the best...I've experienced some vibration and lack of power...
I combined STP injector cleaner with vpower and hit a motorway. Great improvemence, the trouble has gone the the car runs great. Read full review...

Verified purchase:  Yes | Condition: new | Sold by: partcentraluk

great product

my engine was getting really smokey on starting has reduced the smoke a lot

Verified purchase:  Yes | Condition: new | Sold by: z00mcc

An excellent product

This is without doubt an excellent product. cleans injectors & stops that misfire feeling. It also gives better fuel economy on short runs.

Verified purchase:  Yes | Condition: new | Sold by: partsdaddyuk

Essential and effective.Great deal!

Looking after your injectors [and fuel pump] should have been an established service requirement.What I realised was that this[and other treatments]are working whether you are driving or not,and mirror -to a large extent- the processes which would take place if you were to physically remove and clean the injectors.
My engine definitely runs better and I am reassured that I have an effective tool for extending the life and efficiency of my engine.
They are an essential part of my vehicle maintenance program now.
{I really wish I had this clarity decades ago}Read full review...

Verified purchase:  Yes | Condition: new | Sold by: partsdaddyuk