V184 wrote:If exhaust gas temperatures don’t reach a high enough level due to frequent short journeys at low speed the ECU can place the engine into regeneration mode. During regen mode the ECU will conduct post injection, this is the process of injecting extra diesel into the combustion chamber after the main injection cycle. Post injection helps to increase exhaust gas temperatures however much of the injected diesel is left unburnt and filters its way down to the oil sump resulting in oil level rise.
Very eloquent, I didn’t know you had it in you…