Brake Fluid
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Senior User
Joined: May 2007
Posts: 154
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From: Boonville, NY
Brake Fluid
Noticed on a can of brake fluid I recently purchased that it was synthetic. Asked the man at NAPA if all brake fluid nowadays was synthetic and he said NO. Is this compatible with our old trucks? What happens if you mix it with non-synthetic?
Wish things would quit changing. I'm getting too old for this.
Wish things would quit changing. I'm getting too old for this.
New User
Joined: Feb 2008
Posts: 22
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From: Monongahela, PA
The problem is not synthetic brake fluid, but silicone (DOT 5) brake fluid. DOT 3 is DOT 3. DOT 3 is hygroscopic (water absorbing) and DOT 5 is hydrophobic (non-water absorbing) and mixing those causes corrosion in the system due to moisture build up. Feel free to use it as long as it is DOT 3.
-Stephen
As a side note, DOT 3 has always been synthetic. The inclusion of the word synthetic is a marketing trick to make it look like an improved product and to persuade fans of synthetic products (oils and such) to continue purchasing their products.
-Stephen
As a side note, DOT 3 has always been synthetic. The inclusion of the word synthetic is a marketing trick to make it look like an improved product and to persuade fans of synthetic products (oils and such) to continue purchasing their products.
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supercab78
Brakes, Steering, Suspension, Tires, & Wheels
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May 21, 2007 06:58 PM
