Can you actually use an OTTOkat as an Oxicat?
IMO not, because the catalytic converter has a different function than the Otto catalytic converter. AFAIK, this has already been discussed before.
If (in Austria as well as in Germany) tax evaders were punished less severely, I would have long since been driving with 'unmodified diesel,' because the TDI engine also runs well on it.
If you're not mistaken, fiscal 'petty offenses' are sometimes punished more severely in Germany than some violent crimes, unfortunately. When it comes to the state's money, the state shows no leniency

. But German jurisprudence is a different chapter and doesn't belong here.
When starting cold, my modified engine doesn't produce more smoke than many factory-built diesel engines, even when running on the worst fuel.
Based on the smoke behavior, one cannot, in my opinion, conclude about all the other byproducts that are emitted in relation to DK. My point was that burning mineral oils, cold cleaners, etc., which are not primarily intended for combustion in diesel engines, cause even less optimal exhaust values than heating oil, for example, and I cannot approve of that. But cargo ships are much worse in that regard

.
PS: What are the taxes for a VP-TDI (66 and 81 kW) engine that meets Euro2 standards in region A?