* For both engines, the viscosity grade will depend on your climate. Consult your owner's manual for the specific recommendation (usually something like 5W-30 or 10W-30). Using the wrong viscosity can damage your engine.
* Type of oil: The Sunfire typically uses conventional, synthetic blend, or full synthetic motor oil. Again, check your owner's manual, as it might specify a certain type, though most modern oils are compatible with older cars. The manual may also specify an API certification (like SM, SL, etc.). Always use an oil that meets or exceeds the specification in your owner's manual.
To find the exact recommendation:
1. Locate your owner's manual. This is the most reliable source.
2. Find the section on engine oil. It will usually specify the recommended viscosity and type.
Without the owner's manual, providing a specific recommendation is risky, as using the incorrect oil can harm your engine.
