A few months ago, I bled the brakes and hydrovac on my 1950 GMC 2 ton and noticed the brake pedal was very hard to push and would only go down about an inch and I moved on to other more fun things to work on. Today I had to test run it again
and the brake pedal would go nearly to the floor so I checked the fluid and it was almost empty so I refilled it and checked all around for leaks but didn't see anything. Everything in the brake system except the hard lines is new and the engine was just professionally rebuilt. Where did the brake fluid go?
