Audi engines use a mix of antifreeze and water to cool the engine while it is running. Over time the coolant in your engine can break down. It can collect contaminants including oil and corrosion that mix with the coolant and make it less effective in keeping your engine at an optimal operating temperature. Draining your Audi's cooling system will clear these contaminates from the system. Regular cooling system flushes will help to keep your vehicle running cool for years to come.
Step 1 - Park the vehicle on a flat surface.
Step 2 - If the engine has been running, allow it too cool completely.
Step 3 - Remove the radiator cap. On older vehicles it will beon the top of the radiator. On newer vehicles it will be on the coolant expansion tank.
Step 4 - Locate the petcock valve on the lower corner of the radiator.
Step 5 - Place a waste oil collection pan underneath the petcock valve.
Step 6 - Open the petcock valve by turning it counterclockwise.
Step 7 - Allow the radiator to drain completely.
Turn the petcock valve clockwise to close it.
TIPS: Find out the cooling system capacity of your vehicle by looking in the owner's manual.
Make sure the waste oil collection pan you use is large enough to handle the entire contents of the cooling system.
THINGS YOU'LL NEED: Waste oil collection pan
Needle nose pliers
WARNINGS: The coolant in your Audi engine becomes extremely hot while running the engine. Always allow the engine to cool completely before servicing the cooling system. Failure to do so could cause scalding or burns.
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