According to the 2002 Ford Focus Owner Guide : ( 5W-20 ) engine oil is recommended
5w20
Very Carefully
Fuel pump... yes. OIL pump... NO!
5w-20
4 quarts
4 quarts 10W40
5W-20 , according to the Owner Guide
According to the 2002 Ford Focus Owner Guide : For the 2.0 litre SPI engine and the 2.0 litre Zetec-E engine : ( 5W-20 )
4 quarts for the SPI engine - - - 4.5 quarts for the Zetec engine.
According to the 2002 Ford Focus owners manual : With engine oil filter change : The 2.0 liter Zetec engine takes ( 4.25 liters / 4.5 quarts ) The 2.0 liter SPI engine takes ( 3.78 liters / 4.0 quarts )
A Ford Focus needs anywhere from 4.5 to 6 quarts of motor oil. The Ford Focus was fist produced in 1998.