[TR] DOT 5 Brake Fluid

[DAVID MASSEY]

 While it is true that DOT5 entraps air easily it also will give it up fairly quickly.  They use it in vacuum pumps for that reason.  The trick I use is I will top up the reservoir and wait before I bleed.  A day if I can.  This allows any air to percolate out before it gets into the closed system.
 
Dave 


 
 
-----Original Message-----
From: baltoalpine at gmail.com
To: triumphs at autox.team.net
Sent: Sun, Apr 30, 2023 2:32 pm
Subject: Re: [TR] DOT 5 Brake Fluid

I use DOT 5 in all of my LBC's for the same reasons Glenn gave.  

I know some folks complain that it can be hard to bleed the brakes with DOT
5 though. This is because while it isn't hygroscopic, it does collect air.
A friend showed me a jar of new from the bottle DOT 5. He put it in a glass
bell jar and pulled a vacuum on it. We watched it look like it was boiling
as the air came out of suspension.  If you don't have that kind of equipment
(I don't) just treat the DOT 5 containers gently, and pour slowly into the
master cylinder.

Joe McConlogue
'57 TR3, awaiting new rear seal
'74 Spit, awaiting engine overhaul
'56 MGA, in late stage restoration
'67 Alpine, laid up for a water pump

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