Recommended replacement interval for the part category Oil filter : 1 year / 15000 km

Important!

This replacement procedure can be used for:
AUDI A6 Avant (4A5, C4) 2.0, AUDI A6 Avant (4A5, C4) 2.0 16V, AUDI A6 Avant (4A5, C4) 2.6, AUDI A6 Avant (4A5, C4) 2.8, AUDI A6 Avant (4A5, C4) 2.0 16V quattro, AUDI A6 Avant (4A5, C4) 2.8 quattro, AUDI A6 Avant (4A5, C4) S6 Turbo quattro, AUDI A6 Avant (4A5, C4) 1.8, AUDI A6 Avant (4A5, C4) 1.8 quattro, AUDI A6 Avant (4A5, C4) 2.3, AUDI A6 Avant (4A5, C4) 2.3 quattro, AUDI A6 Avant (4A5, C4) 2.6 quattro, AUDI A6 Avant (4A5, C4) 2.0, AUDI A6 Avant (4A5, C4) 2.8 … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Oil Filter for A6 Avant (4A5, C4) and other AUDI models

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Replacement: engine oil and filter – AUDI A6 Avant (4A, C4). Tools you'll need:

                      Oil filter cup socket 65/67-14f
                    
                      Drive socket # 19 
                    
                      Ring spanner # 19
                    
                      Torque wrench
                    
                      Oil drain pan
                    
                      Funnel
                    
                      Microfibre towel
                    
                      Fender cover

Buy tools

AUTODOC recommends:

Replace the oil filter every time when changing motor oil.
Wear gloves to prevent contact with hot liquid.
Use only new O-rings during installation.
Warning! Shut down the engine before starting any work – AUDI A6 Avant (4A, C4).

Carry out replacement in the following order:

Step 1

Open the hood.

Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.

Step 3

Lift the car using a jack or place it over an inspection pit.

AUTODOC recommends:
The vehicle must be on even keel, and if it is at an angle, the drain plug must be at the lowest point.
Step 4

Unscrew the oil filler plug.
Step 5

Undo the fasteners of the oil pan lower cover.

Step 6

Put a waste oil container with at least 5 l capacity under the drainage hole.
Step 7

Unscrew the drain plug. Use a drive socket No.19 or ring spanner No.19.

Step 8

Drain the used oil.

Replacement: engine oil and filter – AUDI A6 Avant (4A, C4). AUTODOC recommends:
Caution! The oil may be hot.Wait until the oil has completely drained from the drainage hole.
Step 9

Move the container under the oil filter.

Step 10

Unscrew the oil filter. Use the 65/67-14f socket.

Please note!
You might need other tools.
Step 11

Prepare a container for the old oil filter.
Step 12

Remove the oil filter. Put the old oil filter in the container.

Replacement: engine oil and filter – AUDI A6 Avant (4A, C4). Tip from AUTODOC experts:
Move up the container. The oil starts to drain out of the drainage hole immediately after you have removed the oil filter.
Step 13

Clean the oil filter seat.
Step 14

Lubricate the rubber seal of the new filter with a little amount of fresh oil.
Step 15

Screw the new filter into its place. Tighten it to 20 nm torque. Use a torque wrench. Use the 65/67-14f socket.

Please note!
You might need other tools.
Step 16

Screw in the new drainage plug and tighten it. Use a drive socket #19. Use a torque wrench. Tighten it to 30 nm torque.
Step 17

Clean the area of the oil pan drainage hole.
Step 18

Remove the oil filler cap.

Step 19

Insert the funnel. Pour new oil into the engine in the amount recommended by the car manufacturer.

Replacement: engine oil and filter – AUDI A6 Avant (4A, C4). Professionals recommend:
Use the oil recommended by the manufacturer.
Step 20

Check the oil level using the dipstick. Top up oil if necessary.

Please note!
The oil level should be between the min and max marks.
Step 21

Tighten the oil filler cap. Run the engine for a few minutes. After the oil pressure warning light goes out, stop the engine.

Step 22

Check the oil level 5 minutes after the stop of the engine operation using a dipstick and add oil if necessary.

Please note!
The oil level should be between the min and max marks.Make sure that the oil filler cap is properly tightened.Check the threaded plug of the drainage hole and the oil filter seal for tightness. If necessary, carefully tighten them up.
Step 23

Reinstall the oil pan lower cover. Tighten the fasteners of the oil pan lower cover.

Step 24

Lower the car.

Step 25

Remove the fender protection cover.

Step 26

Close the hood.

Replacement: engine oil and filter – AUDI A6 Avant (4A, C4). AUTODOC experts recommend:
Note that oil pressure warning light, which indicates insufficient pressure in the lubrication system, may be on for a longer time than usual. After a few seconds, the oil will fill all the channels, and the light will go out. To protect the environment from pollution, be sure to dispose of the used filters at special collection points.

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