Wynns WY28272 Diesel Particulate Filter Cleaner, 325 ml

After 3 failed regenerations at dealer, tried this today on my 2 year old Nissan Note 1.5 diesel.Nissan Customer Service is a complete joke, not honouring warranty, claiming DPF blockage is down to driving style, even though my vehicle is high mileage and does frequent motoway trips. Needless to say, I won't ever buy a Nissan again.Anyway, the verdict? It works! I had an engine management light constantly on and also a flashing auto start/stop. Car would 'hesitate' under heavy acceleration.Had half a tank of fuel remaining. Added all of bottle to tank, and then filled up the remaining half of the tank with some Shell V-diesel. Gave my car a good thrashing on the motorway (keeping revs above 3000rpm using 3rd and 4th gear). After 80 miles or so and a quick toilet stop the start/stop light disappeared and full engine response was returned. Took the car for a further 40 miles or so. But engine management light still on. Took the car out again in the afternoon after a 3 hour break and did another 30 miles on the motorway. Went home, had a cup of tea and started the car up again and bingo - engine management light also gone!So, I'm very pleased! I don't normally write reviews, but thought this might help someone else. And please, don't ever buy a Nissan.

Paid £45 to have my filter regenerated at Garage, but (whilst on holiday trip) light showed again after 1500 miles and low power kicked in. Decided to try this cleaner, did 50 miles on motorway, power improved but light stayed on made return journey of 50 miles on motorway by the end of which power was much improved, but light stayed on. Next day headed for home on motorway, power continued to improve light still on. Stopped for a cuppa, on restarting engine light was off. After a further 2000 miles light is still off and car is nippy and responsive to the throttle. Will be adding this to my next tank of diesel. I regularly make a round trip of 36 mileswith most of it having 40 and 30mph restrictions, I now drive these in 4th (40) and 3rd (30) gear which keeps my revs over 1500 which I understand helps to keep the filter cleaner.

when used with a fuel cleaner(seperately)it does the job.i use this monthly,in the long term will save me money,high mileage driver

The Car went on Limp Mode ( Restricted Power ) Due DPF Choked up due to Too much Short Cold Engine's Run's, Poured in a Bottle of DPF Cleaner into Fuel Tank ( Make sure there is a Decent amount of Fuel in Tank. Min Half a Tank ) Went on a Long Run ( Dual Carriage way is Best ) Keeping Engine at a Warmer Temp and the DPF Cleaner and Warmer Engine Dislodged all the Build up in the Engine DPF. Car Driving Normal Now but will have to take it to a Garage to Cancel the DPF Trouble Code Light on Dash as it came on when Filter became Choked but even with DPF Light on, It still Dive's Fine.

I couldn't possibly say whether it made a positive difference or not. My DPF was in reasonable condition for an eight year old car when it was last checked by a mechanic a year ago. I ran a bottle of this through as a service/precautionary measure a year later just to try to keep it as clear as possible (it's approaching the mileage where the manufacturer suggests a DPF replacement). There were no obvious performance issues with the car or warning lights at the time so nothing to measure an improvement in. I have not noticed any difference at all since using the product either.A small note of caution, though, in case it helps to feed into a bigger picture. Something odd happened barely 48rs after putting this stuff in the fuel tank. I put it in on a Sunday, drove to and from work (42 mile round trip) the following day and everything felt normal. Ten miles into my journey to work the following morning, though, my car completely cut out as I accelerated off a roundabout on a dual carriageway. I pulled over for a moment then started the ignition and the same thing happened as I pulled away. I coasted into a lay-by and gave it five minutes then drove the remaining few miles gingerly. All was fine on the way home and it hasn't happened again since. This is the only time it has happened in this car and it's just the timing that seems a bit coincidental.

Had dpf problems for over a year, someone recommended this cleaner, users it the first time, and dpf full light went out the next day! I now use a bottle every 5-6 weeks and lights never been back on, and cars driving has improved greatly. £10 or less every 6 weeks, can’t go wrong, instead of paying silly money for a dpf flush or having to make needless journeys on motorway to clear the filter.

Ahh now it's always argued that this stuff doesn't work, however I used this on my 2011 Trafic with over 200K on the clock which was suffering from a blocked Cat, I'm too lazy to remove the Cat in this snow so I tried a bottle of this stuff, I can say there is a definite improvment in spool up and overall power. And that horrible smell from the exhaust has gone!

Used this for some time now. Every 2000 miles approx. Car is 6 years old and 58000 miles. No DPF problems so far. Always use premium diesel as well.