Curtin88

On 10/11/2022 at 10:03 PM, Autobarn said:

Not possible, Diesel IS light oil so even if you pour something thick like 2 stroke oil in your tank it will dissipate into the fuel leaving no trace, more likely to be other unrefined products from forecourts sourcing cheep fuel during shortages, bitumen is just one of 6,000 products derived from crude but it is more likely to be an organic waxy product that I have come across on more than one occasion recently, not any concern as long as you keep on top of filter changes  

Possible, injector seals will be leaking, allowing engine oil to contaminate with return fuel from injector back to fuel tank 

What was the outcome? 

Hello Audi owners, I am the proud owner of a A7 Sline quattro, since October. It’s MY2012 with only 15k on the clock