Are you talking about inverted flare fittings at the wheel cylinder and brass T connections? In that case, too tight and the flares themselves either split or over-compress and lose their ability to seal. Are you trying to use sealing rings in those connections?
I can certainly understand leakage at the master cylinder copper gaskets. But usually flare fittings are pretty good to seal.
Personally, I like DOT4, especially for larger trucks or trucks pulling a load. I remember having my brake fluid boil off when towing a heavy load in to medicine hat. I walked to a local autoparts store, bought a pint of DOT4, put that in and didn't even have to bleed the brakes. That fluid lasted for another 10 years until I got rid of that truck.
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13-03-21, 21:50
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