85Gold

What a voice of reason and we aren't going to die.

Peter

dunlopnick

I would guess the shop had a brake fluid description put into their invoice system and thats why its on your receipt. I'd ask the question though

mark kibort

i wonder how this is possible in a sealed container. the fluid needs to be exposed to air to really degrade. certainly worth a question to the shop to find out what they reallly put in. i do think that many fluids if checked on any given sunday will perform well below specs. people make too much of a religion of fluids when it comes to DE. anything that is clean, hasnt been stored in an open container is going to be just fine.
but, if you paid for the good stuff...certainly worth a complaint and a re-fill

no, you are not going to die. worst case, you might get a spongy pedal!

Gary R.

No ****... Brake fluid isn't a magical elixir, if it is sealed it can not absorb much moisture and it's age in the sealed bottle (within reason, i.e. a year or less) is not an issue. Personally I think anything but Castrol SRF is a death sentence at a DE, but I tend to exaggerate..

serickson

Bottles absorb moisture. In the Phamaceutical Industry you perform Moisture Permeation testing on the container/closure system. Or they did not control the manufacturing/filling operation. I would stick to a brand that has proven history.

rebrewer

I think it's not so much that the bottle absorbs moisture as much as it is that the bottle is permeable to moisture. Moisture permeability isn't unique to the pharm industry, which I suspect also tests for oxygen permeability. Even beer makers do container and cap testings. Picking the right container with or without a barrier isn't rocket science. I would think any company selling brake fluid would be cognizant of that. Now I have to go out to the shop and look at brake fluid bottles...

Glyndellis

According to Motul, unopened brake fluid does have a shelf life - either 2 or 3 years, IIRC. They recommend storage in lower humidity areas i.e. in the heated basement rather than the garage. I also store the unopened bottles in ziplock bags, and understand I have a healthy paranoia.

turbochad

What he said

I have been party to test data showing the effect of time on the performance of brake fluid. The tests clearly show that brake fluid in sealed containers absorbs moisture and degrade in performance in a linear fashion over time. All the fluid companies know this.

mark kibort

if you were "party " to the data showing the effects of time on brake fluid "performance" and the test's data was "clear"...........
what did your "tests" find?
"linear fashion" meaning, if it lost 10% the first year, it would be 10% every year after that?
are you talking boiling point? wet/dry ? compresibility?
did you test both metal and plastic bottles? (KEY POINT)

Again, we are talking DE here. we are not talking a GRAND AM enduro race.
stock fluids are a little week and are not recommended for the track. but brake fluid kept in its container for a few years is not going to be a problem, if unopened..........just as fluid in your system exposed to heat, air, condensation, etc, isnt a problem for a few years either.

think about it... you buy a GT3 cup car from 2015 that right from the factory. would you worry about changing the brake fluid.. heck that has been open bottle for 3 years! how about a brand new GT3.. might be up to 1 year old.. that fluid has been basically in an open container with the lid off!

you guys are getting a little mental over all this. like the Nitrogen for DE discussion.

key point though, is if you are talking steel container, vs plastic. steel, unopened will not absorb any moisture. (other than what it was sealed with)
Many brands like Stoptech, even since SuperBlue, come in metal containers. you cant compare the two.............or did you do tests with both???

turbochad

GS610 originaly came in metal containers. It didn't make any difference to whether or not it took on moisture in the sealed container. It happens in both metal and plastic containers.

For this inquiry it is not worth digging up the test data from three years ago. I recall it being surprisingly bad. Dry boiling and also alkalinity changes. Wet is wet.

8 year old brake fluid in a sealed container is nothing more than hazardous waste. It should not be in a tracked car. Nobody is mental over it, the original poster asked if GS610 could still be in production or good if old. The answer is simple, No.

OGRacing

I am not positive, but I believe that any RS683 would be old stock from previous company. We sold GS610 and RS683 in the past. When the GS610 company went away there was somewhere between 20K-40K bottles available is what we were told. Any that is available would have to have been produced prior to 2010. And the last order we placed in Dec 2016 for RT700 was never shipped after being told and being sent a picture of the shipment being unloaded. Had to do a charge back on the CC.

Bill

Gofishracing

Mark will buy your fluid. that will solve the problem/ Endless RF 650 or SRF my choice