Hi all, i have a autosleeper on a ford transit 150td reg 1998
Its been blowing black smoke on excelleration, the residue is sooty,black on the tail pipe. Its recently been serviced and the guy said i was not giving it enough welly, and that its only done 30.000 miles i needed to drive it harder. I have put a fiseal addiditive in it and on my last trip gave it some welly. Was i given the right advice. Any advice would be great