I'm glad that I found this topic.
We just drove to NY to purchase our 2011 3100. It was about 3500 miles back home, with side trips and I needed to add a quart at 3000 miles. The seller had the vehicle serviced just before we picked the PC up, and I checked the oil (kind of anal that way, I guess?) when we left. They used Motorcraft oil. The V-10 was working through the hills that the east coasters call mountains, and we were pulling a toad (2011 Ford Escape) on a tow dolly. I have been driving a diesel for the past 14 years, so I really had to get used to the higher revving V-10. Anyway, sounds like this oil consumption is "normal" when the V-10 is working this hard?
A side topic to the oil conversation should be one on oil filters. I saw a U-tube video where several kinds of filters were cut apart and the difference between filter material inside of the filters was disappointing, to say the least. The Fram, which I have been using since High School Auto Shop Class were the most disappointing. The NAPA Gold and the WIX filters contained the most filtering material. NAPA Gold is made by WIX.
A good friend of mine worked at the county garage where they serviced all county vehicles including police cars. He said the black & whites were considered extreme duty vehicles; they are driven by different deputies every day, sometimes at high speeds for long periods, but hours and hours of idling almost every shift. They switched to full synthetic, and even with the harsh usage, they changed oil only every 7500 miles. But, they used good filters. Just my 2 cents.
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