Mobil 1 ATF brake fluid regret?

[TheNewGuy]

Lots of threads here about using Mobil 1 ATF, and most of the comments seem positive. I'm curious whether anyone has had any negative experiences with it. I'm asking because I already have a large jug in my garage and would prefer to use it instead of MIL-PRF-83282 if there are no significant downsides.

 

[Brantel]

No regrets here after putting it in my 7 about 18 years ago.

 

[terrye]

Large jug....? Has it been opened? Very important to keep moisture out of the brake system. It doesn't boil off like in an automatic transmission.

 

[Brantel]

Large jug....? Has it been opened? Very important to keep moisture out of the brake system. It doesn't boil off like in an automatic transmission.

Mobil 1 Synthetic ATF is non-hygroscopic.

 

[jbDC9]

19+ years and 2400 hours using it in my brakes. No issues.

 

[andoman]

Given the decades of successful use of Mobile 1 ATF as a brake fluid in experimental aircraft, I doubt you will hear of a bad experience that can be attributed directly to the fluid. I’m betting that the responses will be echos of the positives above.
A few might chime in knocking it as not being a proven aviation hydraulic fluid that is certified and bonafide…