Acura 2008 TSX Owner's Manual page 298

Adding Engine Oil
API CERTIFICATION SEAL
Make sure the API Certification Seal
says ''For Gasoline Engines.''
292
Ambient Temperature
An oil with a viscosity of 5W-30 is
preferred for improved fuel economy
and year-round protection in your
vehicle. You may use a 10W-30 oil if
the temperature in your area never
20°C).
goes below 0°F (
Synthetic Oil
You may use a synthetic motor oil if
it meets the same requirements
given for a conventional motor oil: it
displays the API Certification Seal
and it is the proper weight. You must
follow the oil and filter change
intervals shown on the multi-
information display.
Engine Oil Additives
Your vehicle does not require any oil
additives. Additives may adversely
affect the engine or transmission
performance and durability.