I'm not sure that I understand your response, who is the goober? The engineers at Ford base their recommendation on "average" oil. Some people will use the cheapest oil available, some will use the best they can find - so split the difference. If the manual tells me that I can go 5000 miles on dino, I can surely do it with synthetic. Why would a lube manufacture tell you to disregard your owners manual, they would be accepting a huge liability. The Mobil 1 Extended Performance line is "Guaranteed performance and protection for up to 15,000 miles." That sure tells me something.
Harvest Gold 2001 Ford Ranger XLT 4x4, Off Road package, SOHC 4.0 automatic, Line-X bed liner and step rails, Silverstar bulbs, Alpine CDA-7894, Alpine R series 6.5 components [front], Alpine R series 5x7's [rear], "hard wired" Passport 7500s radar detector, 35% tint on sides and top of windshield, Undercover tonneau, Rancho RSX shocks, Clifford Matrix RS2 remote remote start/alarm, BF Goodrich All Terrain T/A ko tires, blinker mod, Fusion'd grille, 06 emblems, clear corners, Wet Okole seat covers