I say 5 qts of motor oil. i would put 4 qts in and add as needed.
On a 2005 Ford Ranger : With engine oil filter change : The 2.3 liter four cylinder engine ( takes 4.0 quarts ) The 3.0 liter V6 engine ( takes 4.5 quarts ) The 4.0 liter V6 engine ( takes 5.0 quarts )
With engine oil filter change : For the 4.2 liter V6 engine and the 4.6 liter V8 engine ( 6 quarts ) For the 5.4 liter V8 engine ( 7 quarts ) according to the Owner Guide
( 4 quarts ) with engine oil filter change for the 2.3 liter DOHC 4 cylinder engine in a 2005 Ford Ranger , according to the Owner Guide
he 2005 Toyota Tacoma with the 2.7 liter engine takes 5.8 quarts of oil
With engine oil filter change : The 3.0 liter " Vulcan " V6 engine takes ( 4.5 quarts ) The 3.0 liter " Duratec " V6 engine takes ( 6.0 quarts ) According to the 2005 Ford Taurus Owner Guide
In a 2005 Ford F-150 , 5.4 liter V8 engine : With engine oil filter change : ( 7 U.S. quarts ) ( 2004 and newer F-150 with the 5.4 liter 3V engine take 7 quarts )
According to the 2005 Ford Mustang Owner Guide , for the 4.6 liter V8 , with engine oil filter change ( 6 quarts )
According to the 2005 Mercury Mountaineer Owner Guide : With engine oil filter change : ( 6 quarts of engine oil ) for the 4.6 liter V8 engine
6 quarts with engine oil filter change for the 4.6 liter ( according to the Owner Guide )
That would depend on which model year : For the 5.4 liter in a Ford Expedition , with engine oil filter change : 1997 to 2004 ( 6 quarts ) 2005 and newer with the 5.4 liter 3V engine ( 7 quarts )
According to the 2005 Ford F-150 Owner Guide : With engine oil filter change : The 4.2 liter V6 and the 4.6 liter V8 take ( 6 quarts ) The 5.4 liter V8 takes ( 7 quarts )
In a 2005 Ford Mustang : With engine oil filter change : The 4.0 liter SOHC , V6 engine takes : ( 5.0 U.S. quarts of 5W-30 )