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Ugh - Accidentally topped off the brake fluid with DOT3

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Old 09-28-2005, 08:21 AM
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Default Ugh - Accidentally topped off the brake fluid with DOT3

on the cap it calls for DOT4 fluid. Should I drain it all and go with DOT4 or will I be OK with the mixture?
Old 09-28-2005, 08:34 AM
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Default Googled the problem: It's okay to mix 3 & 4. Never mix 3 or 4 with 5.

Another source also says it is okay: http://realbig.com/detomaso/1997-03/1.html

All things being equal I'd avoid mixing it but it sounds like you are okay.<ul><li><a href="http://the-land-rover-portal.com/discussion/brake_fluid.htm">Land Rover discussion (wish I had a better source).</a></li></ul>
Old 09-28-2005, 09:54 AM
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Default Thoughts....things you can do with a turkey baster.

If you "topped it off" you only added perhaps and ounce or two. Its not in the system yet. If in doubt.. sleepless nights, tossing, worry, tenssion headaches and the knots in your stomache can be alleviated.

Buy the right fluid...then take a TURKEY BASTER.. large squeezable bulb and a tube?...ask your wife.. and suck up all but the last 1/2 inch of fluid in the resavoir. Don't empty it you don't want air near the intake even though none will enter being you are not pumping the brakes.

No add in the new fluid. :-)
Old 09-28-2005, 10:05 AM
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Default Why are you topping off your brake fluid?

Just have to drain it when you change your pads.
Old 09-28-2005, 11:46 AM
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Default You should not need to top off....

Your brake fluid will look low but in reality it is only filling the space in the calipers that low brakes create. You should have your brake fluid changed at 2 years regardless of mileage.
Old 09-29-2005, 05:17 AM
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Default Thanks all! Gonna have Audi drain and replace the fuild

and your fuild level will fluctuate with the thickness of the pads and it can cause this problem (reportedly from an Audi mechanic). I looked in the engine bay for any leaks and there are none.
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