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

Made a big difference almost straight away

My diesel Volvo has always been great but struggled with starting. This product not only improved that, but overall she runs much more sweetly, smoothly and easily faster than before

For any driver of a modern or high-mileage diesel vehicle, injector cleaner is not a luxury—it's a maintenance necessity. The Wynn's Diesel Injector Cleaner is an incredibly effective, non-invasive solution that delivers noticeable, immediate results in smoothing out a rough diesel engine. It's the perfect pre-MOT treatment and a smart way to maintain fuel efficiency. Problem Solver: Immediate Noise and Smoke Reduction The primary benefits of this cleaner are instantly apparent and directly address the two biggest concerns for diesel owners: noise and emissions. Reduced Diesel Knock: After adding the full bottle to a nearly empty tank before a complete fill-up (treating roughly 60 litres), the difference in engine sound was significant. The characteristic harsh "rattle" or metallic knock at idle, common in cold starts, was noticeably muted within about 50 miles of driving. The engine idled much smoother and quieter. Black Smoke Elimination: Vehicles with higher mileage often generate a puff of black smoke during hard acceleration, indicating poor combustion and particulate buildup. This cleaner worked remarkably well to reduce this visible smoke, ensuring cleaner combustion and less buildup on the DPF (Diesel Particulate Filter) over time. Technical Insight and Value This product utilizes potent detergent chemistry to clean microscopic carbon and unburnt fuel deposits from the injector nozzles. By restoring the original fine spray pattern, it ensures every drop of fuel is combusted properly. Improved Efficiency: Cleaner injectors mean better fuel atomization, translating directly to improved torque response and a small, but measurable, boost in fuel economy. It essentially restores the engine’s performance closer to factory specs. Easy Application: The bottle is easy to open and dispense without spillage, which is a small but important detail. The 325ml size is perfectly matched to treat a standard 50-70 litre diesel tank, simplifying dosage. Consideration While the initial effects are excellent, the benefits are most dramatic on older engines or vehicles that have never used a cleaner before. For ongoing maintenance, a regular dose every 3,000 to 5,000 miles is highly recommended to prevent deposit buildup from recurring. The Verdict The Wynn's Diesel Injector Cleaner is a phenomenal, cost-effective maintenance item that punches above its weight. It is essential for passing emissions tests and provides tangible improvements in engine refinement and noise levels. It’s a crucial tool for keeping your diesel running cleanly and efficiently—an absolute must-buy for any diesel driver.

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

Very helpful, recommended for everyone with the engine start problems. Thank you.

Excellant

Either my injectors are already nice and clean after years of use or this just doesn't work. Didn't notice any difference in performance, fuel economy or just the general running of the engine.

I had four error codes on my car two relating to injector 1, one for injector 3 and one for cruise control, which I believe comes on if there's a problem with the injectors, cost of garage fix, £500 plus, so thought I'd give this a try, put it in took the car for a run no change, cleared the codes but they came back, took it out a couple more times a few days apart and hey presto, codes are gone. I'm a convert now so will use every few thousand. It worked for me. Cheers

El coche ha mejorado mucho el rendimiento.

Good for the price

utiliser directement pour nettoyer la pompe a injection et le système jusqu'a aspiration complete du produit... quelque tuto sur le net vous montreront plus de détails pour cette technique très efficace... moteur ALH 1.9l group VAG

Ottimo prodotto con buon rapporto qualità-prezzo. Arrivato nei tempi previsti (anche solo l'ultimo giorno, ma va bene comunque). Provato immediatamente con un pieno di gasolio, il risultato non si è fatto attendere. Dopo i primi 50 km ho iniziato a notare i primi cambiamenti: meno rumore la mattina nelle partenze a freddo. Poi pian piano: minore fumosità, più fluidità durante la guida ed i consumi in generale mi sembrano essere leggermente diminuiti. Forse avrei avuto lo stesso risultato con un paio di litri di benzina oppure utilizzando carburanti addizionati tipo Shell, ma visto che l'auto ha circa due anni e mezzo, ho preferito non rischiare con la benzina e per il carburante addizionato, purtroppo questi non è reperibile nelle mie vicinanze.

Ha llegado muy rápido y todo bien