Slicone Brake Fluid - Impala Tech
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post #1 of 4 (permalink) Old 06-09-2010, 10:20 AM Thread Starter
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Slicone Brake Fluid

I know that you can't mix the fluids but I am replacing my complete brake system on My 1966 Caprice. New Lines, New Master Cylinder, New Calipers in Front and New Wheel Cylinders in the Rear. Does anyone have a problem or can relate their experience good or bad with Silicone Brake Fluid?


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post #2 of 4 (permalink) Old 06-09-2010, 12:40 PM
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I replaced master cylinder, brake cylinders, new lines and filled with silicone fluid on my '66 21 years ago and have had absolutely no problems in 30,000 miles. I'm converting to front discs later this month, and am going to continue with the silicone.
You are dead nuts right on as far as mixing silicone with dot 3 type.....real mess. I think its a good idea to put a small label on your master saying "silicone fluid only".


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post #3 of 4 (permalink) Old 06-09-2010, 01:57 PM
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Go with all DOT 3 or all DOT 5. They can not be mixed together (even a single drop will create a gel that clogs the system) and you shouldn't use DOT 4 at all; as DOT 5 was formulated to fix all of the the problems that DOT 4 created. I still use DOT 3 as I do not worry about heat so much but moisture in Florida is a serious headache when every street is often the lowest point in a flat plane of sand that is the Florida penisula. Street flooding is as common as the afternoon rains that prevail daily from mid June through late September when we get fifty of our annual sixty inches of rain.

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post #4 of 4 (permalink) Old 06-11-2010, 07:17 AM Thread Starter
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Thanks, Looks like I will go ahead and uses silicone.
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