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Quote:

There a couple of tests you can do.

1. Mixing water in Glycol and Silicone brake fluids: Mix with water at 1:30

2. Mixing Glycol and Silicone brake fluids together: Mix together at 2:15

For testing the condition of Glycol based brake fluid, there are lots of electronic testers out there that will report on the amount of moisture in the fluid. You just stick a probe in the reservoir and read the result in lights (percent water range) or on a display (percent water).

I don't have a photo handy but on my 1956 Clipper, I had just had the radiator re-cored and drove it for the first and only time when it was in an accident that caused the radiator to get cut by the fan in a couple places. A radiator shop soldered the areas and, while visible, it's minor and hardly noticeable.