Wynn's Diesel Particulate Filter Cleaner - Heavy-Duty Cleaning for Severely Blocked DPFs - Restores Optimal Pressure Levels & Engine Performance - Biodegradable Formula - 5L

Does the job brilliantly dont buy cheaper types like spray can total waist of time amd money. Get it directly into the exhaust before filter and it will clear. I used 1 ltrs give or take and that moved alot of deposits. Unfortunately it won't reset fault on dash if gone past regeneration. But any reasonable garage will plug it into computer and reset it for you. Cost me £30 for that and no more issues, better than some quotes for all around £300 to flush filter. Easy job for anybody with half a brain and nit scared to get up car.

DPF filter blocked on Rangerover sport v6 2012. Removed and extra strong tin foil used to wrap up ends. Used this product to soak filter for 10 hrs. Flushed with hot water, and blasted through with jet wash. Watch YouTube videos. Follow instructions on the container. Buy Wynns regeneration additive on here with full tank of Super/Supreme diesel. May need two bottles to regeneration DPF. Drive round to empty fuel tank. Fill fresh with Supreme again half or full tank. Mine came back to life, running like a new car. Full revs and turbo's kicking in. Great price on here. I mess about with cars. This isn't for everyone. You will still need someone to remove the engine warning light of the dash with an OBD reader, if you haven't got one, or buy one on here.

Not cleared warnings yet but think it may need a few more cleans. It definitely is clearing ash and soot, so can't fault it so far. Just think dpf was pretty clogged up.

I used this on a blocked Transit van DPF with a soot content of 350%, I blanked off the inlet side of the DPF and all the pipes and holes then filled it up from where the exhaust would normally exit and left it for 2 days soaking and only agitated it 4 times over the 2 days then drained in to a bucket, back flushed it with hot water then carefully with a jet wash ( NOT A STEAM CLEANER) until the water coming out ( with agitation while draining) run clean, I let it drain out for a few days but after fitting and running there was still water in it so I let the engine dry it out on idle. the DPF differential psi is good at 6kpa but after cleaning it was 2 kpa, originally its kpa on idle was much higher and owing to the soot content at 350% the DPF needed removing I reset the soot content and done a forced regen, not one puff of smoke that's how well this cleaned the DPF ( with a good flushing) NB!!! this is great for removing soot and oil, if you need to remove ash a diluted version of brick acid or an ash cleaner will be needed, there are many YouTube videos to show various methods, but for soot and oil you will not go wrong with this product. NOTE! before following the below instructions you must ensure the readings you are getting on your diagnostic are in fact correct, and all other issues have been ruled out/ fixed. take a copy of your readings before DPF removal or trying on vehicle cleaning. <------ IMPORTANT!!! instruction Remove DPF Block off the intake end ( the flange coming from the inlet manifold) you are flushing the DPF out in the reverse direction to which way the exhaust flows fill with the DPF cleaner and agitate then leave it over night minimum, it says 8 hours but 24 minimum, I left mine 48 hours Drain the chemical in to a bucket if you wish to keep it, flush with hot water ( tap water hot) use a good few gallons and as the water runs through agitate the DPF turning it 12 to 6 and then 6 to 12 and shake it up and down as the water runs through, do this until the water running through the DPF begins to run clean ( it takes a while) leave to drain over night fit back on to the vehicle when fitted and running the vehicle up you will note water running out of the exhaust as the engine runs, let the engine idle for around 30 mins, while letting the engine idle use a diagnostic to check the DPF pressure differential, please check what your vehicles Pressure differential ratio is ( it is around 6kpa for a transit on idle) I had 1-2 KPA which means the DPF is very clear. 100KPA on idle is a blocked DPF, on 2000 RPM after cleaning mine read 5KPA when you are satisfied it is in fact clear reset the soot content( running the engine on idle till hot and revving the engine while viewing the exhaust is an indication but the DPF psi differential is the best indication. do a forced regen when you are completely satisfied your vehicle now meets the criteria! after the regen erase all the faults and restart the vehicle Now the vehicle should no longer be in limp mode if you are unsure about anything you have read I suggest you seek professional help because doing a regen with a blocked DPF can seriously damage your engine. if you have ash blockage this product will not remove the ash, this product is great for removing oil and soot I will add some pictures later

Used this on my 2011 Renault Grand Scenic 1.5 dci with K9K engine. Had clogged DPF. The DPF and CAT are in one unit but after a discussion with Wynn's this was found not to be an issue. Removed unit, easier than expected, and reverse filled the unit after removing the sensors. Had to plug Exhaust Manifold side. The Cleaning Fluid drips out of sensor hole when DPF full. Left for 8 hours, agitated every hour using exhaust flexy as bellows. Refitted unit. Soot went from 80g to 2g. 'Stop - Engine Failure Hazard ' error cleared itself. Excellent, saved a wad of cash.

I had a really badly blocked dpf. I took it off and placed into a bucket. Filled the dpf up with the cleaning fluid. Blocked off the othet side and left it soak for 24 hours. I then used compressed air to push the fluid through the honeycomb to bubble up and really get into the crevices. I then rinsed out using pressure from a hose. Making sure I blocked up the end that the hose went in. Ran it for about 30 mins untill I got out all the solution and soot particles. Left to dry then put it back on the van. Went for a quick drive to burn off the left over water (bit of steam from the exhaust) Product worked really well. Only used half the tub.

Definitely cleaned out dpf. Was expecting it to be a bit better than it was but very easy to use.

Basically truck wash, highly concentrated soap, feels like it, smells like it, take a tip from me, its over priced soap, use warm very soapy water and rinse in through a few times, don't put the water back through, use fresh always, worked OK for a dpf i did after using this over priced rubbish, use the jetwash at a garage on hot soap or whatever then rinse through repeatedly until it runs clear from at least 8 inch away so you dont damage anything, always wash the dpf in reverse, don't jetwash the soot and ash further into the dpf.