Question about 2006 Audi A6
Posted by Anonymous on
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Posted on Jan 02, 2017
In my experience with Audis, after any job requiring changing/draining the coolant the car ideally needs to be driven. With the coolant topped up to max drive the car, keep the revs up and shake the car with steering and over bumps where possible. Whatever you do make sure you take at least 2 litres of water/coolant with you, as as soon as the air lock goes, the level drops a lot and quickly. Also keep an eye on the temp gauge and avoid letting it go much over 90 degrees (over 90 on the gauge usually means its well into the hundreds) When you get consistant hot air through the heater, at idle, the level should of settled. If this doesnt work you may have thermostat issues or a blockage. Good luck, let me know how you get on.
Posted on Mar 26, 2009
If you have no radiator cap that can be removed, you will probably have to do repeated cycles of engine temperature and just add coolant to the overflow until the engine stops draining it.
This isn't like a hydraulic (brake) system so the chance of leaving bubbles behind is far less.
With a radiator cap, it's pretty simple; run the engine until the coolant is visibly circulating and add coolant as the level drops.
Posted on Oct 08, 2009
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