Discontinuation and mixing of Audi-approved engine coolants.
NANHTSA · manufacturer bulletin10216662
Service bulletins
Concerns: Audi 80 B4 (8C) (Model years 1994) · Audi V8 (Model years 1994)
Sources: NHTSA (United States, public domain), Transport Canada (Open Government Licence – Canada), DVSA (United Kingdom, Open Government Licence v3.0), RappelConso and EU Safety Gate (France, Licence Ouverte 2.0).