Tools and Materials You'll Need:
* New oil: The correct weight and type (refer to your owner's manual). Get the correct quantity.
* New oil filter: Specific to your Audi A4's year and model.
* Oil filter wrench: The correct size and type for your Audi's filter. Some filters can be removed by hand, but a wrench is safer.
* Wrench for the drain plug: Usually a 19mm socket, but check your manual.
* Drain pan: Large enough to hold the old oil.
* Funnel: To pour the new oil.
* Jack and jack stands (or ramps): Essential for safe access to the oil pan. Never work under a car supported only by a jack.
* Wheel chocks: For added safety.
* Gloves: To protect your hands from the dirty oil.
* Rags or shop towels: For cleaning up spills.
* Torque wrench (recommended): To tighten the drain plug to the correct specification (found in your owner's manual).
Steps:
1. Preparation: Warm up the engine for 5-10 minutes to thin the oil. Then, turn off the engine and let it sit for a few minutes to allow the oil to drain better. Engage the parking brake firmly and use wheel chocks.
2. Jacking up the car: Securely jack up the car and place it on jack stands under the designated lift points (consult your owner's manual).
3. Locate the oil drain plug: It's usually located on the bottom of the oil pan, towards the front of the engine.
4. Drain the oil: Position the drain pan under the drain plug. Carefully loosen and remove the drain plug using the correct wrench. Let the oil drain completely. This can take 15-20 minutes. Be careful, the oil will be hot.
5. Locate and remove the oil filter: The location varies slightly by year and model, but it's typically accessible from the bottom or the top of the engine. Use the oil filter wrench to carefully remove the old filter.
6. Install the new oil filter: Lightly lubricate the rubber gasket on the new oil filter with fresh oil. Screw the new filter on by hand, tightening it according to the manufacturer's instructions (usually about ¾ to 1 full turn after the gasket contacts the engine block).
7. Replace the drain plug: Once the oil has finished draining, carefully screw the drain plug back into the oil pan. Tighten it to the manufacturer's specified torque using a torque wrench. Do not overtighten.
8. Lower the car: Carefully lower the car using the jack.
9. Add new oil: Using a funnel, pour the correct amount of new oil into the engine (check your owner's manual).
10. Check the oil level: Use the dipstick to check the oil level. Add more oil if necessary to reach the "full" mark.
11. Run the engine: Start the engine and let it run for a few minutes. Check for any leaks around the drain plug and oil filter.
12. Check the oil level again: Turn off the engine and wait a few minutes for the oil to settle. Check the oil level again and add more if needed.
13. Dispose of used oil properly: Take the used oil to a recycling center or auto parts store that accepts used oil.
Important Considerations:
* Consult your owner's manual: This is crucial for specific instructions and torque specifications.
* Safety first: Always use jack stands and never work under a car supported only by a jack. Wear safety glasses.
* Environmental responsibility: Dispose of used oil and filter properly.
This is a general guide and may not be completely accurate for your specific Audi A4 model year. Refer to your owner's manual for detailed instructions. If you are unsure about any part of this process, it's best to take your car to a qualified mechanic.
