[Missing Luck]

Well to be honest my first adblue refill is coming soon and i would not top up more than 4l~ at a time due to the fact that the adblue is only good for 12 months usually.
Your seems like it was overfilled.
Clean it and hope for the best.

 

[Missing Luck]

Thanks for that, I'll tell him. I don't think he knows. To be fair, there's no mention of it being illegal, in the Pro-tuning ad.

Don't know about UK but in other countries for example like Germany they are titled to actually measures the exhaust gases and if the values exceeds the limit: you won't get MOT. By removing adblue or dpf you would be f'ked.
I've heard that sometimes cars with adblue doesn't even pass the bar of not so high mileage cars... 🤷‍♂️