my Volkswagen Passat B8 (2015-2022) has excessive oil consumption

Solution

1. Preparation

• Gather tools and safety equipment, including gloves and goggles.
• Ensure the engine is cool and parked on a flat surface.
• Disconnect the battery to prevent any electrical issues.

2. Replace Worn Piston Rings

• Tools Required: Socket set, torque wrench, engine hoist (if necessary), oil catch pan.
• Sub-steps:
  1. Remove the engine cover and any accessories obstructing access to the engine block.
  2. Drain the engine oil into an oil catch pan.
  3. Remove the cylinder head to access the pistons.
  4. Remove the pistons from the engine block.
  5. Replace the old piston rings with new ones, ensuring they are properly seated.
  6. Reinstall the pistons and torque them to the manufacturer’s specifications (typically found in the service manual).
  7. Reassemble the engine, replacing gaskets and seals as necessary.

3. Inspect and Replace PCV System Components

• Tools Required: Screwdriver set, pliers.
• Sub-steps:
  1. Locate the PCV valve and hoses connected to it.
  2. Remove the PCV valve and inspect it for blockages or damage.
  3. Replace the PCV valve if necessary, ensuring proper fitment.
  4. Check and replace any damaged hoses connected to the PCV system.

4. Check Turbocharger (if applicable)

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Remove the turbocharger from the engine.
  2. Inspect the turbocharger for oil leaks or excessive play.
  3. Replace the turbocharger if it shows signs of failure or wear.
  4. Reinstall the turbocharger and ensure all connections are secure.