Originally Posted by JARblue

The container is stainless steel and not prone to absorbing moisture like those plastic bottles can be. That being said, I opened it about a month ago, and it will be gone in the next month. It is shared between several friends, so the fluid gets used up quickly and doesn't sit around for long periods of time.

The two different colors is precisely the reason I went with ATE for the brakes. I'm less concerned about that for the clutch though because there's only a single line to bleed. I'd be happy to go with Motul instead of ATE, but I assume the Motul shouldn't sit open on the shelf for very long either. If that's the case, I'll just stick with the ATE that I already have rather than buying a bottle of Motul, using less than half, and then having to dispose of it before I have a need to use the rest of the bottle.