Diesel dilution of engine oil from repeated DPF regenerations
Oil level creeping up on the dipstick, oil turning black quickly after a change, DPF or engine warning lights, frequent fan running, reduced power, or limp mode.
How to check
Start from cold, let it idle briefly, then drive for 15 to 20 minutes at mixed town and A-road speeds before stopping and restarting.
Estimated Repair Cost
£900


