Hi DNewton
Yes it's a TDI, EA188 BMN engine code. 125kw diesel. This diesel is one lf the last PD TDIs and one of the first to have dpf, I'm not sure if that helps with soot?
I must stress that I don't know how many Ks the oil had, I changed it at the Ks the sticker said and assumed one factory OCI of 15K kms.
I'll test again in another 15!