i have been thinking about buying a 2010 audi a5 with the 3.2 v6 engine. however, in doing some research, it looks likes these audi/vw direct injection engines suffer from severe carbon buildup. Some say this v6 has worse issues than the audi 2.0 4cyl engines (which is available on an a5 for the first time with model year 2010). Others have said it was a faulty cyclonic system that has caused these issues and audi is now having the system replaced when these cars come in for repair. i have no idea if this is a new part or if they are just replacing in case it was a faulty part. do any of you know??? so, does (will) the 2009/2010 audi a5 with a 3.2 v6 fsi engine suffer from this carbon buildup? is the only "solution" to reducing this issue being to use an oil like redline or biosyn with a 5k oci? do any of you know a better oil to use that is fuel dilution resistant? any other thoughts?