Ford FOCUS RS 2017 Owner's Manual Supplement page 46

E142732
If you are unable to find an engine oil that
meets the specification defined by
WSS-M2C931-C, it is acceptable to use a
motor oil of the recommended viscosity
grade that meets API SN requirements and
displays the API Certification Mark for
gasoline engines. Do not use oil labeled
with API SN service category unless the
label also displays the API certification
mark.
An oil that displays this symbol conforms
to current engine, emission system and
fuel economy performance standards of
the International Lubricants Specification
Advisory Council (ILSAC).
Note: Do not use more than 1.1 qt (1 L) of
the alternative engine oil between
scheduled service intervals.
Using oil and fluids that do not meet the
defined specification and viscosity grade
may lead to:
Component damage which may not be
covered by the vehicle Warranty.
Longer engine cranking periods.
Increased emission levels.
Reduced engine performance.
Reduced fuel economy.
Degraded brake performance.
2017 Focus RS (CEW) RS, Canada/United States of America, HM5J 19A285 DA enUSA, Edition date: 201611, First Printing
Capacities and Specifications
Do not use supplemental engine oil
additives because they are unnecessary
and could lead to engine damage that may
not be covered by the vehicle Warranty.
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