The early model DPF systems were designed before Bio diesel was added to normal fuel. Bio is great at keeping the system clean and lubricating injection pumps, BUT it has a higher boiling point and does not evapourate at normal oil temperatures. That means any fuel getting past the rings and into the oil during a cold start will acculmulate. Bad, bad news as fuel is the second worst oil contaminant.
The solution is to change the oil only about twice as often as the Max recommended interval.
Later DPF systems and stop start diesels reduced the DPF issue, although they all seem to fail before the main block.
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2003 V40 1.9TD Mods: Scratches, bent bumpers, raised REAR mats & internal mud guards.
SHELL ULTRA 5/40 & LIQUI MOLY CERATEC.
Everyone should DYOR (Do Your Own Research)
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