AdBlue isn’t an additive.

 

Most user manuals forbid the use of fuel and oil additives.  The ‘system treatment’ is a revenue generator for the workshop. 

VW Group never to be undersold do retail their additives. 

Vorsprung Durch Technik.   Just say to Service Desk upsellers 'No!'

On 11/08/2019 at 12:04, Tech1e said:

Recommended by who though? I’d wager it wasn’t Skoda though as they forbid the addition of any additives (other than adblue of course).

Recommended by the main Skoda dealer who did the service and listed in the service sheets that accompanied the bill.

Trained Dealership Employees, sit at desk receiving & returning keys and payments.

trained on use of a Phone, keyboard and up-selling.