Honda Civic Sedan Owner's Manual page 122

Engine Oil
Recommended Oil
Oil is a major contributor to your
engine's performance and longevity.
Always use a premium-grade deter-
gent oil.
You can determine an oil's SAE
viscosity and Service Classification
from the API Service label on the
oil container.
A fuel-efficient oil is recommended
for your Honda. This is shown on
the API Service label by the words
"Energy Conserving I I . " This oil is
formulated to help your engine use
less fuel.
Maintenance
The A P I Service label also tells you
the service classification of the oil.
Always use an oil that says "API
Service SG or SH." This service
rating may also include other
designations, such as CD. These
additional classifications are not a
problem, as long as the label also
carries the SG or SH classification.
An oil that is only classified SF is
not recommended.
The oil container may also
display the API Certification
mark shown below. Make sure it
says "For Gasoline Engines."
API CERTIFICATION MARK