According to the 2003 Ford F-350 Owner Guide :
With engine oil filter change :
The 6.8 liter GASOLINE , V10 engine takes :
( 5.7 liters / 6.0 U.S. quarts of 5W-20 )
Seven quarts.
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 )
7 quarts
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 )
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 )
According to the 2003 Ford F-250 owners manual : For the 5.4 liter V8 and the 6.8 liter V10 gas engines : With engine oil filter change : ( 5.7 liters / 6.0 quarts of engine oil )