What kind of oil should you use in a 1995 Lincoln Town car Signature Series?

A 1995 Lincoln Town Car Signature Series, assuming it has the 4.6L V8 engine (the most common), should use 5W-30 motor oil that meets the specifications API service classification SL or later. Check your owner's manual to be absolutely certain, as there might be specific recommendations for your car's engine based on climate or other factors.

While 5W-30 is generally recommended, you might find a recommendation for 10W-30 in hotter climates. Always prioritize the oil type specified in your owner's manual. Using the wrong oil can damage your engine. Also, make sure the oil meets the API service classification (like SL, SM, SN, etc.), which indicates the oil's performance characteristics. Newer classifications (SN, SP, etc.) are generally better than older ones (like SG or SH).