Wynn's Diesel Injector Cleaner - Reduces Knocking & Black Smoke - Protects Fuel System from Corrosion - Safe for EGR, Turbo, DPF & SCR - 325ml

No issues at all. Straightforward usage into my hdi citroen after giving it a service. Cleared a bit of smoke on boost I was having through low usage so I'd recommend to anyone putting a bottle of this through once a year.

This stuff is amazing adds protection to the engine....have used this for years and will continue to do so

kept my 170000 mile injectors going for 2 more years

This worked wonders for my car. I have a diesel Renault Kadjar and the check injector engine management light came on. I used a full bottle of this on a full tank if diesel and the problem cleared itself within 2 weeks. Didn't need to do anything else. Saved a fortune on potential garage costs.

So writing this review almost after two months since I added the cleaner to my car a 2012 passat tdi i have always used shell vpower diesel for my car since i bought the car a year ago,so coming to the wynns injector cleaner i filled upto 50ltrs of diesel and added the cleaner as recommended ,you wont feel the cleaner working straight away but personally i felt the car started running smoother as the days go by and starts like a brand new car in any sort of weather after 10-15 days it did have a bit of white smoke at start like after 5-6 days after i added the cleaner but with the right quality fuel according to your choice i do believe the product does really good.Also i did feel a mileage increase not a huge increase but noticeable.Will buy one more to treat the injectors one more time.thanks wynss for cheap and effective injector cleaner.super happy with the purchase

Neither here nor there, you can't tell if it works or not

Seems to have worked and quietened down, MPG seems a bit healthier too

Mileage, sheerness and thickness? Wtf?I used this stuff (with 20 litres of Shell V Power diesel) and it didn't make much difference but then I doubled up on some other stuff (2 x Liqui Moly Super Diesel Additive Injector Cleaner 250ml with 30 litres of Shell V Power Diesel) and there was an immediate change, this stuff may have loosened the crud ready for the double bubble of other stuff to do it's job? It was funny that there was an instant improvement when I added the other stuff and now that I have filled up with standard diesel (77 quid!) it's still fine!The Barge (Mondeo Estate with a 1.8 TDCI = big and slow! 😀).She was juddering more and more, been an issue since I bought it 3 years ago, I did treat her a year or two ago with a cocktail of stuff from Halfords which improved her for a while!Not done many miles since I filled up got the Esso good stuff for not a lot, I was previously using supermarket fuel but I've found a cheap Esso garage so I'll continue to use the Esso Premium diesel from now on!