View 2005 Audi A4 1.8 T Quattro Oil Type Audi would not provide a rental car and did not attempt in any way to assist. Request a dealer quote or view used cars at msn autos. 2005 Audi B6 A4 1.8T Quattro, Ultrasport, 6-spd, Alpine ... from www.audiforums.com First mechanic told me bad pcv breather valve was stuck closed causing pressure and engine to leak out of.