[Oeva-list] Changing brake fluid.

CraigSchaefer calvinjean2 at comcast.net
Mon Jul 1 12:55:24 PDT 2013

I'd worry about the fluid going in.   It hasn't been tested.  At least what's in the vehicle proves it's worked up to that point. 

What the hell are we talking about?  Who here has ever heated their brake fluid to the boiling point of water?  (In the brake system, that is) 

----- Original Message -----

From: "Steve's Account" <stevel at fern.com> 
To: oeva-list at oeva.org 
Sent: Monday, July 1, 2013 12:37:06 PM 
Subject: [Oeva-list] Changing brake fluid. 

> By not having the vehicle inspected at a dealership, am I hurting my 
> warranty at all? I still may take it in for the free battery report anyway. 

So long as you comply with the maintenance requirements, set forth by the 
manufacturer, I believe your warrenty is safe. 

As for "boiling point" of the brake fluid.. You could probably draw a sample 
of your brake fluid, and heat it up, measuring it's temp with a thermometer 
until it boils. 

The hard part is "getting that sample".. since brake fluid doesn't 
really "flow" in the brake system.. there is no mixing.. and you might 
have wet fluid in a wheel cylinder, when the fluid "tank" on the brake 
master cylinder was still "dry". 

Since the place where heat is generated is in the wheel... that's 
probably the fluid you care about the most... So.. if you draw a 
sample from each wheel cylinder, and test each one, you would probably 
have your answer.. but, by the time you have done that, you might as 
well have just replaced it with "known good" brake fluid. 

In addition, keeping the water out of your brake lines is a good thing 
from a corrosion point of view. (Assuming, of course that you can keep 
an EV on the road for long enough for it to matter! Will there be any 
50 year old EV's on the road in 45 years? Any 100 year old ones? Will 
the next generation of car collectors be able to keep the old ones 
running? It's just as likely that the current generation of ICE's won't 
be maintainable over the long run due to lack of propiretary parts.) 


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