FORD 2000 Focus - Manual (Page 188)

Maintenance and care
188
Engine oil and filter
recommendations
Look for this certification mark.
Ford oil specification is
WSSĆM2C153ĆG.
Use SAE 5WĆ30 motor oil certified
for gasoline engines by the
American Petroleum Institute.
Do not use supplemental engine oil
additives, oil treatments or engine
treatments. They are unnecessary
and could, under certain
conditions, lead to engine damage
which is not covered by your
warranty.
Change your engine oil and oil filter
according to the appropriate
schedule listed in the Scheduled
Maintenance Guide".
Ford production and aftermarket
(Motorcraft) oil filters are designed
for added engine protection and
long life. If a replacement oil filter
is used that does not meet Ford
material and design specifications,
startup engine noises or knock may
be experienced.
It is recommended you use the
appropriate Motorcraft oil filter
(or another brand meeting Ford
specifications) for your engine
application.