brake fluid in the coolant res!!! - BMW Luxury Touring Community
 
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post #1 of 9 Old Sep 4th, 2011, 10:55 pm Thread Starter
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brake fluid in the coolant res!!!

I really screwed up and put a few ounces of brake fluid in the coolant res. How bad did is that? Safe to ride a few miles to dealer to flush the cooling system????? Feeling so stupid right now.
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post #2 of 9 Old Sep 4th, 2011, 11:25 pm
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Re: brake fluid in the coolant res!!!

I would not ride it or start the engine since you'll contaminate the entire system.

Just drain or suction out the reservoir, fill with 50/50 coolant and distilled water, repeat then fill with 50/50. Since brake fluid is hydrophilic you should not have any trouble removing all traces.

No big deal as long as you don't start the engine.


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post #3 of 9 Old Sep 4th, 2011, 11:30 pm
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Re: brake fluid in the coolant res!!!

This is only a guess on my part and there will be others who are more knowledgeable than myself that will jump in...but I would think if it's indeed a couple of ounces like you previously stated you should be okay to drive a short distance to have it flushed. If it was me however and you have the know how--it would be better to flush it in your garage. The properties of brake fluid being what they are I wouldn't want it circulating through seals and gaskets. It really wouldn't be a terribly hard procedure to do either. Just my two cents...

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post #4 of 9 Old Sep 4th, 2011, 11:31 pm
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Re: brake fluid in the coolant res!!!

You would be wise to follow Ron's advice...wish I thought of that.

Wade
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post #5 of 9 Old Sep 5th, 2011, 5:58 am
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Re: brake fluid in the coolant res!!!

What Ron says. Plus check this thread as well http://www.bmwlt.com/forums/showthre...cooling+system

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post #6 of 9 Old Sep 5th, 2011, 7:16 am Thread Starter
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Re: brake fluid in the coolant res!!!

Cleaning it out was my first thought, too. If I was more of a wrench turner I would have the flush and fill done already. I've done it to car cooling systems but can find anything on how to flush and fill the K12LT. I am tempted to have AAA tow it to a dealer. Any links to flush/fill for idiots??? Clearly I qualify.
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post #7 of 9 Old Sep 5th, 2011, 9:01 am
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Re: brake fluid in the coolant res!!!

As Ron said DO NOT RUN ENGINE.
I would ad the following:
Take a garden hose and let it run in the reservoir to overflow for several minutes.
Use a turkey baster to draw off the water. You can also remove the small hose at the radiator filler neck and blow the residual out. Then refill with 50/50.
Even if you ran the engine a bit you are OK unless you let the engine get hot enough to draw from the reservoir..
It should be OK

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post #8 of 9 Old Sep 5th, 2011, 9:10 am
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Re: brake fluid in the coolant res!!!

http://www.bmwlt.com/forums/showthre...coolant+system

Look at post #7...hope this helps. If this is more than you think you can handle...do what Ron suggests and then drive it to the dealer.

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post #9 of 9 Old Sep 5th, 2011, 3:54 pm Thread Starter
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Re: brake fluid in the coolant res!!!

Already done. I flushed the resivoir out with water. None of the brake fluid should have made in past----I hope. 50/50 back in the hard to read bottle.

Thanks for all your help during my recent panic attack.
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