However, generally speaking, for a 1997 Lincoln Town Car, you should use:
* SAE 5W-30: This is a good all-around choice for most climates and driving conditions. It's likely what the owner's manual recommends.
* API certification: Look for an oil that meets or exceeds the API certification recommended in your owner's manual (this will often be something like "SF", "SG", or a later designation). Modern oils often meet the latest certifications, which is generally fine.
Crucially: Check your owner's manual. The manual will specify the exact type and weight of oil recommended by the manufacturer for your specific engine and operating conditions. This is the most important information. Using the wrong oil can damage your engine.
