I will likely be doing my own oil changes. I just acquired gt2 that had been sitting on the lot all year so it has just 500 miles. I'm thinking of doing 1st oil change in late fall since it born on date was 11/17. So 1 year time interval will indicate 1st change and not mileage in my case. I also plan to get a topsider pump instead of crawling under and removing the splash guard each time and dealing with leaky pan plugs, or changing washers with each oil change (not sure how this oil pan is set up). I might pull the pan plug every few changes to see if more comes out. I'm curious as to whether the Stinger can be driven up on a pair of Rhino ramps without contacting the bottom of the front bumper?
As far as the recommended 6K mile oil change interval is concerned, it's way to short for a modern engine (even a turbocharged one) considering the total oil capacity of the 3.3 and if using full synthetics. I've used primarily synthetics for years on vehicles with recommended conventional oil change intervals from 5-7K miles. During the warranty period, I generally stuck with those intervals while using synthetics. Once powertrain warranties expired, I went to roughly 10K intervals. At even 5K miles with conventional oils VW, Toyota, Chrysler, etc., had bad sludge problems a decade or so ago due to heat in engines with tight tolerances, use of aluminum, etc. That isn't likely to happen with synthetics due to the molecular structure's resistance to breakdown. A bigger risk of an extended oil change interval might actually be failure of cellulose oil filter elements. The Germans and maybe others by now are using fleece filtration elements which will last 15, 20K and perhaps longer.
That said, I was a little disappointed to see the owner's manual stipulation of 6K mi oil changes. Like I suggested above, I'll probably stick with that schedule, through the warranty period. Afterwards, I would likely extend the intervals out a bit, and yet further if someone develops a fleece filter for this engine.
