Liqui MolyDiesel PurgeCompact by Design (Certified by Amazon)

Aye was Sceptical about this one as for the Price of it waited till had quarter of diesel left in tank poured full tin in drive for 30 miles didn’t use car next day my car is a 2019 Qashqai average miles per gallon 70 ? Am average 87 & 91 miles now ? Now aye don’t no about helping with knocks our helping with Smoking from car’s but am very happy with my miles as from 70 to average 87 mile up every one like that little bit more. Recommend this product for anyone with diesel engines

Made the diesel engine run smoothly again.

Good product good seller

I haven't had much experience with Liqui Moly products but my car has now done 100,000 miles since we purchased it and I know that regardless of servicing, which I do myself, age and use will eventually catch up and cause your vehicle to run less efficiently.Using it is super simple. Just open up your fuel filler and poor it straight in. My only gripe was that there was no nozzle to put on the end of the bottle so I had to improvise a little to get it in. Once I poured it in I didn’t drive straight away as the other half needed the car. I asked her to top up the fuel so that everything would mix properly and that is pretty much it.When I eventually got to drive the car I did feel like there was a bit more power. This could easily have been a placebo but it did feel like the acceleration was was more responsive than before. Not by much but enough for me to feel something noticeable.I am going to be fair and give the product a 4-star. I purchased it to help reduce deposits in the combustion chamber and hopefully that is what it is and will do. I felt like it gave a small improvement to acceleration but I accept that it could be me thinking there is more to it than there actually is.

Bought this after getting some decidedly dodgy diesel. Did exactly what I wanted, seems to have cleaned out the system and helped stop fuel starvation at the injectors.Saved a strip down

Good addative

Used on my 2003 Volvo D5 engine. It has 190K on the clock. The engine was always quite noisy during idle, first thing in he mornings - vibrations sent through the body of the car. I was using Redex diesel treatment several times before. Simple staff, just pour it into the tank. The fuel consumption improved for a while but that was it. However, after this treatment... what a change! Engine purrs like a cat. It is pleasure to drive again. Feels like a new engine. Definitely recommend this product if you are comfortable with disconnecting fuel lines on your engine. The job is fiddly, there is not much room to hook the lines up together with in-line fuel filter etc. (I followed a great, detailed video on the internet provided on 'Sirobb' channel. He used 1 litre of the staff, I only used one 500ml bottle). But in the end it is definitely worth the hassle.After this experience, I believe that any cleaner that you pour down to the tank is almost worthless. Easy to do but no real results. This treatment, however, cleans the injector thoroughly because it is not diluted with the diesel fuel in the tank.

Came on time and we’ll packaged . I followed the instructions to the letter but 2 weeks later not noticed any difference at all