AUDI A6 4A5 C4 2.6L ABC SOHC 12v Petrol V6 110kW Wagon AWD [11/94 - 12/97]. AUDI A6 4A5 C4 2.6L ABC SOHC 12v Petrol V6 110kW Wagon FWD [06/94 - 12/97]. XTRA COOL GOLD is suitable for use in all vehicles not requiring anti-freeze protection, both petrol and diesel.