I recently bought a 2005.5 A4 Quattro. I plan on doing my first oil change this weekend. I read that the turbo engines tend to develop sludge and an engine treatment before the oil change is a good idea.
I bought some Seafoam but I am hesitant to use it. I have noted mostly good reviews on the net, but I would prefer not to use any treatments if not necessary or recommended.
Any comments? Do Audis develop sludge?

Thanks for your comments!