Audi A4 (02-08) Haynes Repair Manual (Does not include information specific to diesel engine, S4 or RS4 model information. Includes thorough vehicle coverage apart from the specific exclusion noted): Haynes: 9781563928376: Amazon.com:
Audi 100 C3: the world's most honest car #Unexpectedfavorites
Real Road Test: Audi 100 C3 diesel non-turbo Avant! - YouTube