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Old 2nd February 2017
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Naughty Nigel Naughty Nigel is offline
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Re: The Peugeot Diesel Pollutant Saga

Hmmm.

JLR had problems with some earlier diesel engines (specifically the 2.7 litre V6) when these were first fitted with a DPF system. The engine and DPF system was developed by Ford in conjunction with Jaguar and Land Rover (then owned by Ford), Citroen, Peugeot and others.

The DPF system is of course designed to remove particulate matter from the exhaust gasses. When this become full it is effectively 'regenerated' by injecting diesel fuel oil during the exhaust stroke which in turn burns the sooty deposits that have collected in the DPF. Add Blue is a sticky material which improves the efficiency of the filtration process.

The DPF system works well, but the DPF needs to regenerate at a reasonable speed, not in nose to tail traffic. There have also been numerous reported problems where 'failed regenerations' result in fuel oil finding its way into the crankcase. This is what seems to have happened in your case. The main worry is that the fuel oil (diesel) will have diluted the lubrication oil in the crank case, resulting in accelerated wear.

I had several free oil changes on JLR's account because the oil level had risen above the Maximum mark!

JLR overcame the problem by updating software in the engine's ECU, although the advice to this day is not to fill the engine to the maximum mark to allow space for some fuel oil.

I only cover about 6,000 miles per year in my car, but these are mainly long journeys. I have never seen a DPF warning yet.
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