Brake Fluid Life

[royclark]

I have 2L of Audi brake fluid (dot 4) it has never been opened but has an expiry date 2014.

Why does brake fluid have an expiry date? :confused:

[zollaf]

normally its because it absorbs water from the air, but since this is still sealed then its probably fine to use.

[snig71]

It is cheap enough to buy, bin it and buy a new one. All products like this have a shelf life, as Roy says with brake fluid it is because it absorbs water. Adhesives, oils etc all have a shelf life and degrade. Even tyres have a shelf life.

[royclark]

It is cheap enough to buy, bin it and buy a new one. All products like this have a shelf life, as Roy says with brake fluid it is because it absorbs water. Adhesives, oils etc all have a shelf life and degrade. Even tyres have a shelf life.

I was cheap, (free).
I will ask my son to get me some more, FREE.

[snapdragon]

Sometimes they put expiry dates on stuff to keep their liabilities finite. It's just a business practice.