Oil diluted with diesel during particulate filter regenerations (Mazda6 GH 2.2 diesel on short trips)

Engine / equipment

Mazda6 (GH) 2.2 diesel with particulate filter

Period mentioned

2008–2012

Symptoms

The oil level rises on the dipstick instead of falling, especially on cars used mostly for short trips.

Possible cause described

According to AUTO BILD, it is the diesel’s only weak point: on short trips, diesel gets into the oil during particulate filter regeneration and dilutes it.

Check for the garage

Check the oil level with the engine cold; if it is above the maximum or smells of diesel, change the oil and filter. Make a long road trip now and then so the regeneration can finish.

Cost cited in the source

No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database