Hi all, First ever post, and definitely succumbed to the Elvish ways. Though late to the Green party, finally put in Gold GC into both 1.8T Passats we own. These AEB engines are notorious for sludge issues. I was wondering though about extending the OCI for they are also notorious for PITA OCs. Should I stick with the 5K miles requirement by VW? One vehicle is still under sludge warranty, 76K miles, and the other is not at 132K miles (and ARX'd). I'm planning on doing UOAs for both cars, but if I'm to do extended OCIs, where should I start? IOW, 5K, 6K, or greater than 7K? Anybody have a max OCI for these engines? Thanks all!