Engine oil Shell or OEM Audi

Shell Rotella T for the win - get it cheap at your local Walmart in gallon jugs. Side note on collapsed lifters - ATF Type F, added to the oil and a 5-10 min idle cycle before you change the oil can really help clean them out for cheap. Note, ATF has a lot of cleaners in it, and is thin, DO NOT rev it...just let it idle. Worked awesome on my old Coupe GT 5 cyl with horrid lifters.

Mine doesn't use any, and it gets an italian tuneup every time I start it. Running Rotella T6 5w40

Those engines do burn oil. Clogged PCV would be the first to eliminate. Go w/a HD 5w-40 like Rotella.

Try the Rotella 10w-30 T5. Thin oil may work better to free things up.

I always run rotella 15w-40 in my mk3 2.0 8v. No complaints and its cheap

I just did the 4th oil change (first non-dealer change) on our 40k mile Tiguan TSI and used Rotella T6. I use it in my stage 2 WRX and think it's fantastic, so why not in the TSI. Great oil overall.

I run the T6 in my 2.0T FSI.

Rotella T6 5w-40 is a great Diesel full synthetic.

Another vote for the Shell Rotella 15w-40. I run it year round in my Rabbit.

I use Shell Rotella 15W40. It is C grade oil specifically for diesel engines.