At 125,000 Miles Then Every 20,000 Miles
Diesel Particulate Filter (DPF)
Check ash loading according to manufacturer�s work procedure, replace if necessary.
If DPF replacement is not necessary, perform check every 20,000 miles (30,000 km) thereafter until replacement becomes necessary.
Subsequent DPF replacement interval is a minimum of 120,000 miles (200,000 km), thereafter.