Good morning,
I know that brake fluid is hydroscopic, but what I need to know is whether it will absorb water while in the bottle (ie. Go off) or only in use under pressure…
Reason is, I have a 2/3 full bottle of Motul 5.1 and it has been open for about a 2 years… will it still be OK to do a flush of my system, or should I can it and just get some more? The container has been indoors and sealed since it was opened…
Cheers