BMW 325D 3.0L 2007 70K
Diesel Particulate Filter warning light on and lack of power. Suspect particulate filter blocked. DPF differential pressure checked: idle 152 mbar, 2000 RPM 500 mbar, full throttle 955 mbar.
The fault was cured by adding 2 x DPF Cleaner And Regenerator into the fuel tank and carrying out a 20 mile road test. After the road test the DPF differential pressure was re-checked: idle 21 mbar, 2000 RPM 100 mbar, full throttle 165 mbar.
The recommended limit is 65 mbar for a clean DPF. It is also recommended to use Clean & Protect (Advanced Formula Motor Flush and Oil System Protector) to clean and maintain the oil system and adding Advanced Formula Diesel Treatment to the fuel tank to clean and lubricate the fuel system.
Thanks to Bob at Big Motoring World in West Mailling, Kent.
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