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Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ |
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06-03-2023, 04:49 PM | #1 |
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Shelf life for open brake fluid
Once you crack the seal on brake fluid is it safe to use again after its been sitting for a few months ?
I am looking to bleed my brakes tomorrow and would like to finish off what's left of my castrol SRF plus open another new bottle that I would plan on using again next time I bleed the brakes any issues with that plan ?? Thanks
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06-04-2023, 12:55 AM | #2 | |
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Quote:
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06-04-2023, 02:34 AM | #3 |
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https://blog.amsoil.com/dot-3-and-do...he-difference/
Mentions dot3 can absorb 2% per year, the more moisture in the brake fluid the lower the boiling point will be. I won't use old bottles myself, especially if it's going on track. |
06-04-2023, 02:44 AM | #4 | |
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Quote:
Thanks for the link
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2014 GT86 Orange 6 Speed https://www.youtube.com/@spareroomracing3168/featured Build Thread: https://www.ft86club.com/forums/showthread.php?t=153004
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06-04-2023, 01:44 PM | #5 |
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Okay I used some of the new bottle mixed with the rest of the old bottle. Job done and the brakes feel great. We will see how they hold up long term
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06-04-2023, 02:30 PM | #6 |
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Plastic wrap over top of the opening and then putting the cap on top of that might be an effective moisture barrier.
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06-04-2023, 04:02 PM | #7 |
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Put the un-used bottle in your drawer
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06-04-2023, 04:07 PM | #8 |
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"The time you enjoy wasting is not wasted time"
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06-04-2023, 04:52 PM | #9 |
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instructions unclear, everything is in a bunch now.
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06-08-2023, 07:18 PM | #10 |
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If the cap is tight it can only absorb what moisture is inside the bottle. 2 months 2 years does not make any difference. You will be fine. If you store it outside with the cap off I would not use it.
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06-08-2023, 08:10 PM | #11 |
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I have a bottle of Stoptech SRF660 fluid that was opened ~4 years ago. Just tested it a few days ago with test strips. The strip barely showed any contamination at all. It probably is at least 98% good. Bottle was sealed with just the regular cap and stored in my garage.
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