Here's a question for you. How long can brake fluid sit in an unsealed bottle before it becomes unusable?
The reason I ask this is because I replaced the brake fluid on one car last weekend and I want to do another car this weekend. I have about half of one of those 1 quart bottles of fluid left over from the last job that I'd like to re-use. It's been sitting in the bottle with the cap on all week and I'd hate to waste it.
I'm already familiar with the hygroscopic properties of glycol-based fluids and the warnings about always using fluid from a sealed container, so you don't have to explain that part to me again, thank you.
