Brake fluid question - differentiating old from new
Getting ready to do a brake flush and, from what I hear, the ATE blue is no longer available due to some federal prohibition on varying colors of items such as brake fluid. A couple questions:
1) I'm sure there is some color variation between new and old fluid, but how much? I.e. when you're working at the caliper, is it easy or pretty
difficult to tell when you've gotten the old out and you're seeing only new fluid?
2) My kid offered me some Motul dot 5.1 fluid that he bought awhile ago but hadn't used. It's a few years old but still sealed. Is it okay to use, or should I get new?
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