Very Carefully
5w20
According to the 2002 Ford Focus Owner Guide : ( 5W-20 ) engine oil is recommended
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 )
According to the 2002 Ford Focus Owner Guide : With engine oil filter change : The 2.0 litre SPI engine takes ( 3.78 litres / 4.0 U.S. quarts of 5W-20 ) The 2.0 litre Zetec engine takes ( 4.25 litres / 4.5 U.S. quarts of 5W-20 )
Fuel pump... yes. OIL pump... NO!
When you change the oil and oil filter.
5w-20
4 quarts
4.5 Quarts with oil/filter change.
According to the 2002 Ford Focus Owner Guide : With engine oil filter change : The 2.0 liter SPI engine takes ( 4.0 U.S. quarts of 5W-20 ) The 2.0 , Zetec- E engine ( 4.5 quarts )
I am not aware of a 2002 Ford Fiesta! In the US?
Because you need oil change