Brake Fluid Question/Curiosities
Thread Starter
Burning Brakes
Joined: Nov 2022
Posts: 1,060
Likes: 1,120
From: Western Mass
Brake Fluid Question/Curiosities
Question...
The high temp brake fluid like Castrol SRF has a wet boiling point that's higher than the standard fluid's dry boiling point. I don't know how long it takes to get down (or up) the moisture content curve but why would you need to replace the SRF every year if one wasn't tracking and wanted to replace the OEM fluid with SRF? If I were to hit the track every season, yes for sure, but why with just replacing and not tracking?
Thoughts most welcome.
Mark
The high temp brake fluid like Castrol SRF has a wet boiling point that's higher than the standard fluid's dry boiling point. I don't know how long it takes to get down (or up) the moisture content curve but why would you need to replace the SRF every year if one wasn't tracking and wanted to replace the OEM fluid with SRF? If I were to hit the track every season, yes for sure, but why with just replacing and not tracking?
Thoughts most welcome.
Mark
Sr.Random input generator
Joined: Jan 2008
Posts: 7,803
Likes: 2,232
From: Sammamish, WA
Straight from Castrol:
https://www.google.com/url?sa=t&sour...wY0NpKFrsKh8Ok
"It is recommended that this fluid is changed every 18 months to maintain it's exceptionally high vapour lock performance."
I personally think you'd be fine even if you use it for a lot longer than 18 months. I never flush it after the first time, but bleed it a good bit every time I need to touch brakes.
https://www.google.com/url?sa=t&sour...wY0NpKFrsKh8Ok
"It is recommended that this fluid is changed every 18 months to maintain it's exceptionally high vapour lock performance."
I personally think you'd be fine even if you use it for a lot longer than 18 months. I never flush it after the first time, but bleed it a good bit every time I need to touch brakes.
