I had last changed the Toyobaru's brake fluid last spring. Then I crashed it and it sat at a shop the whole year, went into storage late last year with only a few hours of driving time on it, and now I'm getting it ready to go on the street again. I was curious about what condition the brake fluid would be in, hoping I might be able to get away with not swapping out barely-used brake fluid but expecting that the amount of use made no difference to its condition. A couple years ago I bought an electronic brake fluid tester, unfortunately the shape of the brake MC reservoir on this car makes it impossible to get the tester probes immersed, so instead I pushed some fluid out of one caliper and ran the test on that.
And when I dipped the probe in, it read...no detectable water content, 0%, just like testing in open air. Even though it had just passed through a bleeder bottle's valved tube setup and been deposited into a random plastic cup. This was my first time using the tester and I thought maybe it was faulty, so I tested it in a bowl of water. It jumps right to the top of the moisture scale as soon as the tips of the probes touch the surface. So I guess the brake fluid is still pretty much good as new. Maybe that's how it was last spring too, I'll be testing before blindly changing fluid from now on.
