I used an all-rounder one, like from Wynn's. I was positive this was snake oil but I was in my Vito, about 200 miles away from home in limp mode. Error codes for turbo. I chucked this in since I was stuck, got some smoke pooting out the exhaust and then boom - limp mode cleared.
I use and recommend Wynns Formula Gold, available from Halfords, Amazon and many other outlets. I have used it every 6th fill up for the last 4yrs in my now 13yr old BMW 318d. Great fuel economy and acceleration sails through the MOT emissions test, a bit more expensive than some of the other treatments on the market but I find it pays for itself with the increased fuel economy.
j'ai utilisé un produit Wynn's pour diesel sur mon 1.5l dci de 2011. j'ai gagné 0.5l au 100.
Literally today my I was driving my Mk6 GTI and all of a sudden it felt horrific to drive, properly lumpy and then the EML and EPC light came on. Managed to limp it into a car park about 500m down the road. I read the code and had P0303 Cylinder 3 Misfire.
Swapped the coil from cylinder 3 into cylinder 2 and cylinder 3 was still misfiring, indicating that it’s the injector at fault and not the coil.
He said it was a sticky injector as it was running like shit and loads of white smoke, indicating unburnt fuel, was coming out of the exhaust.
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The Wynn's brand is registered in Germany. Official website is not specified yet.
In March 2026, PartReview recorded 4 reviews across 2 parts by Wynn's. Average rating — 3.2 out of 5.
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