I have a bottle of RBF600 that’s been on my shelf for about 3 years. Never been opened, seal is still good and stored at room temperature.
Think it’s ok to use for an upcoming trackday?

 

Yea

 

I had some older unopened bottles on my shelf that were a bit older than that so I asked Motul tech support about it and they advised against using it.
This was part of their response, hope it might help some.
"Concerning your request I can tell you that the brake fluid we are talking about is probably older then 5 years.
The minimum shelf life for a brake fluid is 2 years. It doesn't means that after two years the product is automatically expired.
So much older then the double min. shelf life. A brake fluid is a significant component and its performance has direct impact on braking."

 

Thanks for this. I’ll just grab some new fluid. Going to be a hot day at the track...

 

Open the bottle and see what the color is. Should be clear/transparent. If it's yellow or dark yellow its bad. Curious how the fluids looks after sitting for 3 years.

I wouldn't use 3 year old brake fluid even if it hasn't been opened. Water vapor can still enter the fluid overtime despite the "seal". Probably by now it has accumulated a decent amount of moisture.

 

I’ll open it up and document the results in the interest of research.

 

use a el cheapo brake fluid tester. at the very least it should be able to give you a relative comparison to the fluid in your reservoir

RBF600 is like the gateway brake fluid

After you get hooked on the good stuff you have to go to the good stuff:
Castrol SRF or Torque RT700 - they will pay for themselves in labor alone

 

Plastic bottles are permeable and will exchange some stuff with the outside air over time. How significant this is, I have no idea. My high school teacher told me to buy my brake fluid where I would buy my condoms, because you want the newest ones lol. I buy a new bottle every year and throw away the old open container.

 

your teacher sounds awesome

 

FTFY