Seven quarts.
The oil capacity for a 2012 Ford V10 engine, specifically the 6.8L V10, is approximately 6 quarts (or about 5.7 liters) when using a standard oil filter. If you are using a larger oil filter, the capacity may increase slightly. Always refer to the owner's manual for the most accurate specifications and guidelines.
My 1998 E350 takes 6.4 litres, just changing last night
According to the 2003 Ford F-250 Owner Guide : With engine oil filter change : The 6.8 liter V10 gasoline engine takes ( 5.7 liters / 6.0 U.S. quarts of 5W-20 )
According to the 2001 Ford F-350 Owner Guide : With engine oil filter change : The 6.8 liter V10 takes ( 6 quarts / 5.7 liters of engine oil )
Seven quarts.
A Ford 6.8 litre V10 gasoline engine in a 2003 Ford F-250 : Is rated at ( 310 horsepower and 425 ft-lbs torque )
According to the 1999 Ford F-250 Owner Guide : With engine oil filter change : The 6.8 liter V10 gasoline engine takes ( 5.7 liters / 6.0 U.S. quarts of 5W-30 )
7 quarts
According to the 2005 Ford E-350 Owner Guide : With engine oil filter change : The 6.8 liter V10 gasoline engine takes : ( 6.0 U.S. quarts / 5.7 liters of 5W-20 )
According to the 1999 Ford F-250 Light Duty and Super Duty Owner Guides : With engine oil filter change : ( the 6.8 liter V10 gasoline engine takes 6.0 U.S. quarts / 5.7 litres of 5W-30 )
According to the 2003 Ford F-250 Owner Guide : With engine oil filter change : The 6.8 liter V10 gas engine takes ( 6 quarts )