The car was running just fine, although it was drinking a lot of diesel. The only other symptom was a flashing glow plug light. The Used Car Guy holds no liability for your outcomes when trying the procedure listed above. This article is meant only to aid car owners that wish to avoid spending large amounts of money on their used car. The EGR valve (Exhaust Gas Recirculation Valve), sits in the engine bay and exhaust gasses flow through it before moving on through the DPF filter. Because diesel fuel is quite oily in it’s formulation, diesel cars often suffer from carbon build up in the engine. An EGR valve is a prime candidate for coking up with carbon and often results in reduced gas flow through the valve. Again, a common cause for EGR valve problems is frequent short journeys around town as opposed to motorway journeys. DPF cleaning additives are a chemical solution added to the fuel tank which claims to aid the cleaning of a DPF filter.

The warning light is there to serve as an alert that the system requires attention. It’s really important to take action as soon as the light illuminates, failure to do so can result in an expensive repair bill.

STP Diesel Particulate Filter Cleaner 200ml

My Zafira was in excellent condition and may have been previously owned by a very careful driver that rarely revved the engine. My Dpf filter warning light comes off and I blast off down the dual carriageway for 20 mins at 3000 rpm …..that has worked until this week when dpf , glow plug and engine management lights all came on and went into limp mode.

If you only ever use your car for short journeys around town and never drive on a motorway, it’s recommended to use a DPF cleaner in every second or third tank of fuel, doing so will signifanctly reduce soot built up in the DPF. It’s my second Dacia and will be dealer serviced whilst under warranty. Thereafter I’ll self-service it using the correct Renault/Dacia fluids. I’ve no qualms about removing the EGR every 50k or so to clean it, and hope to be able to get towards 100k or so before I need to pull the dpf for an overnight bath in Wynns DPF cleaner and a gentle up-stream power wash, before replacing it.Our Googling of DPF cleaners has unearthed some companies offering a DPF cleaning services.This type of filter off service is used widely in commercial application such as HGVs and construction vehicles. Update ! (2016)We’ve been speaking to some industry experts on this matter and we’d like to offer an updated view. Yes, absolutely. The principle behind a DPF cleaner is to act as a preventative measure to help prevent major problems manifesting themselves accompanied an expensive repair bill. Using a DPF cleaner will cause no harm and even if your DPF is only very lighly full, the cleaner will improve fuel economy and engine performance. Can I Have My DPF Removed? Costs for this serve seem to vary but in most cases it is much cheaper than a replacement filter and not illegal like DPF removal (more on that below).