Update. Just finished. I have done DIY oil changes for 30 years. All the manuals say the 3.6l has a capacity of 6.9 quarts (6.5l) of oil. I used a pneumatic oil extractor and got just 4 quarts out. Double triple checked the dip stick and it was definitely dry. Took the filter off and about another half quart was there. So I refill with Shell t6 and put 4 quarts in and measure with the dip stick. Slightly below full. Ran the engine. No leaks. Rechecked and added another .5 quart. Full. Where the hell is the other 2.5 quarts?
As an aside, the dealer so over tightened the filter and put red thread lock on the oil pan bolt. Impossible to get the oil pan bolt off and with great effort the filter.