Back in May 2006, after 10 solid years with the old one, Ford launched its “All New Galaxy”. None of the new Galaxy was a carry-over from the old one. It wasn’t even made in the same factory.
Does brake fluid have a shelf life? I've got a bottle in the garage that I used on the rear brake of the bike 2 1/2 years ago, now got to overhall the front calipers and I am going to change the fluid as well. Safe to use, or should I buy new?
Brake Fluid deteriorates over time.
It’s hygroscopic, which means it absorbs moisture.
Moisture can in turn corrode brake seals.
Fluid contaminated by moisture will get hot enough to cause your brake fluid to boil.
When brake fluid boils, compressible vapour forms in the brake system causing the brake pedal to feel soft and/or not work at all.
If you have a friendly local garage ask them to test the BP.
It would be interesting to know whether it had absorbed moisture whilst stored in a closed but opened can (if you get the drift!). This must be an enviroment which is better for storage than having it in the cars braking system.
If it cannot be tested, I think I would err on the side of caution and throw away.
But how many people do actually change the brake fluid at the recommended intervals?? (Suggestion for poll???)
DOT 5 is silicone-based without the hygroscopic problem but can pose a problem to seals in certain circumstances unless the brake systems are designed for it.
Basically the stuff is cheap enough. Chuck it and get fresh fluid.
