When I switched our two SD's over I drained the old brown syrup out
, filled with M-1, ran them a couple months, drained again (pretty dirty yet again) and then filled with M-1 again, they've not been changed since, that was over 3 years ago....hmmm
Maybe I'll do it again soon.
Our 300D I recently drained, but it had clean dino in it!
I was amazed. That proves it had a good mechanical maintenance history (runs very well and smooth). I filled it with M-1 and sealed 'er up. Won't have to worry about that one for a long time.
__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)