Plus 3 Golfer
Veteran Member
2009 Jetta
49,800 miles
Oil Ash Volume: 39 ml
Overall average mpg = 42.0
The number that appears to be relevant is the Oil Ash Volume. The question is what is the maximum ash volume before the DFP needs replaced / cleaned. Also, one's overall mpg (gallons of fuel burned) may be an indication of the rate of ash accumulation and thus can be used to extrapolate the life of the DPF given one's expected mpg.
So, my rate of ash accumulation would be 39ml / (49800 miles / 42 mpg) = 0.033 ml / gallon.
MacBuckeye's rate is around 0.039 ml / gallon.
48 / (47000 / 38) = 0.039 ml / gallon or
60 / (58000 / 38) = 0.039 ml / gallon.
49,800 miles
Oil Ash Volume: 39 ml
Overall average mpg = 42.0
The number that appears to be relevant is the Oil Ash Volume. The question is what is the maximum ash volume before the DFP needs replaced / cleaned. Also, one's overall mpg (gallons of fuel burned) may be an indication of the rate of ash accumulation and thus can be used to extrapolate the life of the DPF given one's expected mpg.
So, my rate of ash accumulation would be 39ml / (49800 miles / 42 mpg) = 0.033 ml / gallon.
MacBuckeye's rate is around 0.039 ml / gallon.
48 / (47000 / 38) = 0.039 ml / gallon or
60 / (58000 / 38) = 0.039 ml / gallon.
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