Hey wavinwayne, what type of driving do you do and what OCI do you use? Also, please verify whether you have a 5 qt. sump, versus a Passat or A4's puny 4-quarter.
My driving consists of mostly 75 mph highway driving, 80 miles round-trip per weekday. Several times a month, on a deserted stretch of road near my home, I run the GTI up to around 100 mph for a mile or so, then coast another mile to the end of the road.
My OCI's are roughly every 6k miles. I'll use any readily available VW 502 approved oil. I went 7250 miles once on GC. My GTI has 62k miles on it currently.
I didn't start using synthetic oil until the GTI hit 36k miles. I purchased it used with 15k miles on it, with an unknown prior service history. From 15k to 36k miles, I ran Castrol GTX & SuperTech 5w30 dino oil in it, along with Fram Extra-Guard oil filters. It was, however, serviced once at 22k miles at the VW dealer, so they may have used synthetic oil then. The work order doesn't specify.
My GTI has a 4.8 qt. oil capacity using the stock size oil filter. I can bump that up to an even 5 qt's by using an oversized oil filter.
[ December 20, 2005, 10:12 PM: Message edited by: wavinwayne ]