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View Full Version : Unopened brake fluid shelf life?



SaferRides
24th March 2024, 15:14
Pretty much what the thread title says. There is a variety of opinions for opened containers, but little info on how long you should keep unopened fluid. I have some that was made in 10/2017 and am hesitant to use it.

roogazza
25th March 2024, 08:12
I think/hope the fluid will be ok ? I've just changed fluid and bled the front brakes on the 14 . I looked at the bottle which had been opened at least 5 yrs ago and carried on.

Just waiting for a nice day to test the work.... :confused: :laugh:

SaferRides
25th March 2024, 16:35
I ordered this. Probably overkill, but not much more expensive than Super DOT 4 brake fluid.

https://encrypted-tbn3.gstatic.com/shopping?q=tbn:ANd9GcRbbTWjVGKnWlxO97mmUeWvTVBYMNh xNFdsrK5eL8vAH1x6Vc0umgVrr15yv01-zI8mHUvtS8IyM1KsA6WtCu9ha29Ef-4TdC_Vz_G-tCU18MQ5Lsq_JbaUgWNxdINpmkqXF8JXzC4&usqp=CAc

neels
26th March 2024, 19:38
Got me wondering, so off to google we go

understanding-brake-fluid-shelf-life-and-other-important-fluids (https://knowhow.napaonline.com/understanding-brake-fluid-shelf-life-and-other-important-fluids)

SaferRides
27th March 2024, 07:04
That's pretty much what I found. The stuff I have is probably OK but I'm not comfortable using 7- year old fluid in my front brake. Probably fine for the rear though!



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pete376403
27th March 2024, 07:36
Given that the problem with old brake fluid is that it can absorb moisture, I suppose in theory it could be heated to boil the water off, before using it in a braking system. You'd have t be pretty desperate to save a dollar, though.

SaferRides
28th March 2024, 06:31
Given that the problem with old brake fluid is that it can absorb moisture, I suppose in theory it could be heated to boil the water off, before using it in a braking system. You'd have t be pretty desperate to save a dollar, though.You should make a YouTube video!

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F5 Dave
29th March 2024, 17:44
Only the slow use their brakes.:Punk:

FTW and FTP.

And Fuck Mom. In a mirror.

R650R
31st March 2024, 08:05
Some people leave original fluid in brake system longer than seven years lol
It’s prob ok. Please report back after first high speed run

SaferRides
31st March 2024, 09:17
I had the front brake lever go soft during a ride over the hills east of Coromandel Town. I've flushed a full reservoir of fresh RBF600 through each calliper so it should be OK now.

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SaferRides
1st April 2024, 07:44
The brakes feel better - a few very small air bubbles came out when I changed the fluid, but I am surprised at the difference in feel.

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roogazza
2nd April 2024, 12:29
The brakes feel better - a few very small air bubbles came out when I changed the fluid, but I am surprised at the difference in feel.

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Me too SaferRides, front lever felt good and solid after a change of fluid and a bleed ! This mornings ride was magic as well,little or no traffic to speak of on the roads I go. :corn: :laugh: