According to the 2010 Ford F-150 Owner Guide :
For the 5.4 liter V8 engine ( which uses either " regular " unleaded gasoline 87
octane or E85 ethanol )
( the Motorcraft FL-820-S engine oil filter is used )
The 2010 Ford Flex has a V6 engine.
The 2010 Ford Flex has a 3.5 L base engine size.
The 2010 Ford Flex's engine produces 262 hp @ 6250 rpm.
The 2010 Ford Flex's engine produces 248 ft-lbs. @ 4500 rpm.
I was looking at the 2010 Ford F-150 Owner Guide and it shows : " If your vehicle is flex fuel capable , it will have a yellow bezel placed over the fuel fill inlet "
According to the Owner Guide and fordparts.com : Motorcraft FG-991 , is the fuel filter required for a 1999 Ford Ranger 3.0 liter flex fuel engine
The 2010 Ford Flex has 24 valves.
The 2013 Ford Flex has a V6 engine.
The 2011 Ford Flex has a V6 engine.
The 2009 Ford Flex has a V6 engine.
The 2012 Ford Flex has a V6 engine.
The 2014 Ford Flex has a V6 engine.