According to the 2003 Ford Focus Owner Guide :
With engine oil filter change :
The 2.0 liter Zetec-E engine takes ( 4.5 U.S. quarts of 5W-20 )
* you'll be fine , it will show half way between the ADD and the FULL mark
on the engine oil dipstick , in the middle of the cross hatch area
4.5 Quarts with oil/filter change.
Probably 4 quarts. Check the Owners' Manual.
The 2003 Ford Focus has 16 valves.
The 2003 Ford Focus is a gas-powered vehicle.
The 2003 Ford Focus has a 5-speed manual.
The 2003 Ford Focus has an inline 4 engine.
The 2003 Ford Focus runs on regular unleaded.
The 2003 Ford Focus is 14 ft. 0.1 in. (168.1 in.) long.
The height of the 2003 Ford Focus is 4 ft. 8.3 in. (56.3 in.).
The 2003 Ford Focus has double overhead cam (DOHC).
The curb weight of the 2003 Ford Focus is 2598 lbs..
The 2003 Ford Focus's turning circle is 34.3 ft..