Wynn'sExtreme Diesel System Cleaner - Deep Cleaning Engine Treatment - Restores Fuel Economy & Reduces Emissions - Prevents Turbo, EGR Valve & DPF Issues - 325ml

Had Engine light on due to a blocked EGR valve, put this in with about half a tank fo diesel and it took about ~60 miles but got into my car and the engine light has gone! to be determined if it will stay off but so far definityl worth the ~£9 rather then the cost of a mechanic cleaning it. - Jaguar XF Model Year 2017.

Easy to use

Easy to use ,improved my cars performance

Seems to be doing a good job

Noticeable difference, now running smoother and mpg increased too.

This seems to work , i do notice a difference in my car and for the better ,would use again without a doubt.

I honestly can’t tell you if it made any difference on my car. I’ve used it and it’s no quieter than it was before… that said my car is a high miller and regular use of this product may be of benefit.Good value for money if you what to used on a reoccurring basis.

I purchased this product for my 2011 Freelander 2 which had become a bit sluggish and hesitate on the accelerator.I applied the full container to approximately half of a tank. I was mindful that I didn't want it to diluted in a full tank.Within about 100 miles after use, that is when I began to notice an improvement in the engine response and quality of the drive.Previously it would take a couple of seconds for the car to respond to a request for more speed but now it's instant. I've also noticed a reduction in the loudness of my turbo.I can't say that I've noticed my MPG increase but I dare say that is largely due to my driving style.I will begin to use more often and apply every 3-6 month or so given how my car is an older diesel.Happy to recommend.