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Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2004 Audi A6. Leaking coolant is one of the more common types of fluid leaks on A6s. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your A6's engine and keeps it from overheating. Coolant can leak from the reservoir or from the hoses, in 2004 A6s with the 3.0 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine. The video above shows you where the coolant reservoir, hoses and connections on your 2004 A6 Base are located and the steps needed to fix minor leaks.
A few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. In many 2004 A6s, an anti-freeze leak can cause the temp sensor to record high engine temperatures. Always protect yourself with safety glasses and gloves when working with the coolant on your A6.
Coolant hoses wear out over time and need to be replaced - check 'em early and often2004 Audi A6 3.0L V6
Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary2004 Audi A6 3.0L V6
Did you know that the sun wears out wiper blades faster than rain? Replace your blades twice a year2004 Audi A6 3.0L V6
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2004 Audi A6 3.0L V6
Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here!2004 Audi A6 3.0L V6
Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here!2004 Audi A6 3.0L V6