GM Volt Forum banner
1 - 11 of 11 Posts

·
Registered
Joined
·
59 Posts
Discussion Starter · #1 ·
Purchased two 16oz bottles of official DOT3 brake fluids ACDelco brand from pep shop boys (the GM parts no matched). Siphoned 16 oz out of reservoir, and it looked EXACTLY like coca cola. Put 16 oz new in. Drove a bit. Took 16 oz out (still looked exactly like coca cola although a tiny bit lighter). Put 16 oz new in. Car has 96k miles never had a brake fluid change.
 

·
Registered
Joined
·
813 Posts
I've done something similar for many years with brake and power steering hydraulic fluid. Though I'd drive more than a bit, like several weeks; otherwise, one is only "changing" the top little bit of fluid in the lines. Plus DOT4 beats DOT3 in every way.
 

·
Registered
Joined
·
59 Posts
Discussion Starter · #4 ·
Heheh. Easy way to ensure your fluid won't fail the water or copper test. I thought about getting DOT4 but decided to play it safe and get the official oil recommended in the manual (formerly GM part 88863461 which has been changed to GM part 19299818)

I thought about doing the same with the engine coolant but that woudl be too messy and not worth the money savings.
 

·
Registered
Joined
·
159 Posts
I thought that I had read on this site previously that there is a fairly complicated process required to bleed the brakes on a volt? Like a dealer only service.
Nah, actually just like bleeding on a regular car. I've already done it on my Volt that I purchased about six weeks ago. I'd advise disconnecting the negative terminal of the 12VDC AGM battery just to be sure nothing funny happens.

I do know there is some fancy-shmancy brake actuator .... so by all means DO NOT allow the reservoir to go low and suck air while bleeding at the corners. I suspect that would require a dealer visit to fix.
 

·
Registered
Joined
·
874 Posts
I thought that I had read on this site previously that there is a fairly complicated process required to bleed the brakes on a volt? Like a dealer only service.
I think it's only tricky because the brakes are electronically actuated via an eletromechanical pump instead of just the brake pedal with power brake assist. In theory, if the car's on in neutral with the parking brake applied, the brakes should be actuated just like on a standard ICE car.
 

·
Registered
Joined
·
59 Posts
Discussion Starter · #10 ·
Doesn't the brake fluid in the reservoir eventually completely blend into the brake fluid at the corners?

P.S. A picture of a copper test on the original coca colored brake fluid (I saved some after siphoning it and got the copper test from amazon).

 
1 - 11 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top