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My Audi A6 Estate is smoking from the exhaust and I noticed this morning oil dripping pipe when you started car what could be?

It's impossible to give you a definitive answer without seeing your car and diagnosing the problem. However, based on the symptoms you've described, there are a few likely causes:

Possible Causes:

* Valve Stem Seals: If oil is dripping from the exhaust pipe when you start the car, this could indicate worn valve stem seals. These seals prevent oil from leaking into the combustion chamber. When they fail, oil can leak past the valves and burn in the engine, causing blue smoke.

* Oil Pan Gasket Leak: A leak in the oil pan gasket could result in oil dripping from the exhaust pipe. This is more common when the car is parked on an incline.

* Turbocharger Seal Leak: A leak in the turbocharger seals can lead to oil leaking into the exhaust manifold and burning, creating blue smoke.

* Engine Piston Rings: Worn piston rings can allow oil to bypass the piston rings and enter the combustion chamber, leading to blue smoke.

* Engine Block Crack: In rare cases, a crack in the engine block could allow oil to leak into the combustion chamber.

* Oil Cooler Leak: A leak in the oil cooler can cause oil to drip and potentially even mix with the coolant.

What You Should Do:

1. Check the Oil Level: Immediately check the oil level in your car. If it's low, add oil and monitor the situation.

2. Have It Checked: Take your car to a reputable mechanic as soon as possible. They can properly diagnose the issue and recommend the appropriate repairs.

Important Note: Driving with a leaking oil pan gasket or worn valve stem seals can lead to engine damage. Get your car checked as soon as possible to prevent further problems.