1. Gather Your Supplies:
* New oil: Consult your owner's manual for the correct type and quantity (typically 5W-30 or 10W-30, and around 5-6 quarts).
* New oil filter: Again, check your owner's manual for the correct filter. Auto parts stores can help you find the right one if you don't have the manual.
* Oil filter wrench: The correct size will depend on your oil filter; a cap-type wrench is often best for these older cars.
* Wrench for the drain plug: Usually a 1/2" or 3/8" drive socket or wrench.
* Drain pan: Large enough to hold at least 6 quarts of oil.
* Funnel: To avoid spills when adding new oil.
* Jack and jack stands (or ramps): Crucially important for safety. Never work under a car supported only by a jack.
* Wheel chocks: To prevent the car from rolling.
* Gloves: To protect your hands.
* Rags or paper towels: For cleanup.
2. Prepare the Vehicle:
* Warm up the engine: Run the engine for 5-10 minutes to warm the oil, making it flow more easily. Don't let it get too hot, though.
* Secure the vehicle: Park on a level surface, engage the parking brake, and use wheel chocks on the wheels opposite the side you'll be working on.
* Raise the vehicle: Carefully jack up the car and securely place it on jack stands under the frame, not the suspension. Consult your owner's manual or a repair manual for the proper jacking points.
3. Drain the Old Oil:
* Locate the oil drain plug: It's usually on the bottom of the oil pan, towards the front of the engine.
* Position the drain pan: Place the drain pan under the drain plug.
* Remove the drain plug: Carefully loosen and remove the drain plug using the correct wrench. Let the old oil drain completely – this may take 15-20 minutes. Be careful, the oil will be hot!
* Replace the drain plug: Once the oil has drained, carefully replace the drain plug and tighten it securely (don't overtighten).
4. Replace the Oil Filter:
* Locate the oil filter: It's usually on the side of the engine block.
* Remove the old filter: Use the oil filter wrench to loosen and remove the old filter. Some oil will likely spill, so have rags ready.
* Lubricate the new filter gasket: Lightly lubricate the rubber gasket on the new filter with fresh oil.
* Install the new filter: Screw the new filter on by hand until it's snug. Then tighten it another ¾ to 1 full turn.
5. Add New Oil:
* Locate the oil fill cap: Usually on top of the engine, marked with an oil can symbol.
* Remove the fill cap: Carefully remove the fill cap.
* Add new oil: Using a funnel, carefully pour in the correct amount of new oil as specified in your owner's manual.
* Check the oil level: Use the dipstick to check the oil level. Add more oil if necessary to reach the "full" mark.
6. Lower the Vehicle:
* Carefully lower the vehicle using the jack.
7. Check for Leaks:
* Start the engine and let it run for a few minutes.
* Check under the car for any oil leaks around the drain plug and oil filter.
* Check the oil level again using the dipstick.
8. Dispose of Used Oil Properly:
* Take the used oil to a recycling center or auto parts store that accepts used oil.
Important Notes:
* Consult your owner's manual: This guide provides general information. Always refer to your owner's manual for specific instructions and specifications for your 1985 Lincoln Town Car.
* Safety first: Always prioritize safety. Never work under a car supported only by a jack. Use jack stands for support.
* Hot oil: Be aware that the oil will be hot. Wear gloves and take precautions to avoid burns.
* Environmental responsibility: Dispose of used oil properly to protect the environment.
If you're uncomfortable performing this task yourself, take your car to a qualified mechanic. It's always better to be safe than sorry.
