Brake Fluid - What kind is it???
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Brake Fluid - What kind is it???
Posted: November 11 2007 10:06 PM
 
Jay Bourgraf (aka Jaybird) [ View ] [ jaybird@isoc.net ] [ Car Ads ] [ Blogs ]
Cincinnati, Ohio
(513) 941-7445
 
Working on finishing up a 77 Vette project. It supoposedly had a full brake job, 3 years ago, before it was dropped off to me. I popped the lid on the master cylinder and it needs fluid. I would assume that Dot 5 was used, but I'll be honest and say that I really can't tell. It is still clear, my sniffer can't detect any scent. Hmmm should I dump some on an old fender for a "Paint Strip Test"??????
 
 
Comments
 
Posted by ol bear  -  11/12/2007 12:25 AM
BUY THE WILWOOD STUFF ,600 DEGREES,,,,,,,,,OL BEAR
OL BEAR [ View ] [ Email ] [ Blogs ] [ Car Ads ] crown point, Indiana
 
Posted by Jaybird  -  11/12/2007 02:01 AM
I'm going to have this car running tomorrow. I am just bleeding the brakes to make sure everyhing is up to par before it's initial run around the block. I have never had a problem I.D.ing fluid before. For some reason, I can't tell what it is. Probably be safer just to flush it all and start with fresh.
Jaybird [ View ] [ Email ] [ Blogs ] [ Car Ads ] Cincinnati, Ohio Charter Member since December 2003
 
Posted by da34guy  -  11/12/2007 11:58 AM
Flush it.

Why take a chance?
Don [ View ] [ Email ] [ Blogs ] [ Car Ads ] Prescott, Arizona Charter Member since October 2001
 
Posted by Jaybird  -  11/12/2007 11:58 PM
Exactly. I have too much work in it to roll it up in a ball on the test drive.......Don, I need to send you some Dragster info. You'll enjoy and appreciate it. I found one on the original owners and it is from your area. AND, it has history!!!
Jaybird [ View ] [ Email ] [ Blogs ] [ Car Ads ] Cincinnati, Ohio Charter Member since December 2003
 
Posted by 29robert  -  11/13/2007 12:05 PM
What kind of fluid should he (or I) use? I'm now to the point that I want to fill the brake system and bleed the brakes on my car. Any recommendations?
29robert [ View ] [ Email ] [ Blogs ] [ Car Ads ] La Verne, California Charter Member since November 2004
 
Posted by Streetrodder007  -  11/13/2007 09:44 PM
I would say its not DOT 5, most people dont use that, far majority still run DOT 3 or 4 like it has been for 20 years, works good and still kills the paint and its cheap and easy to flush.
Streetrodder007 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Port Huron, Michigan Charter Member since April 2006
 
Posted by okey4001  -  11/13/2007 10:27 PM
I heard that you can go up in numbers but not down, like if you had 3 you could put 4 in but not 2. Is this true? I know its best not to mix, but in a pinch.
Bob [ View ] [ Email ] [ Blogs ] [ Car Ads ] Copan, Oklahoma Charter Member since April 2007
 
Posted by 27ratrod  -  11/14/2007 07:48 PM
Hi-I just joined and thought I would give you the benefit of my experience. I am using dot #4 brake fluid. It is compatible with #3. The difference is #3 boils at 284 Deg. and #4 boils at 311 deg. I have had no more loss of brake due to boiling since I went to #4.

27 rat rod (papa John)
Papa John [ View ] [ Email ] [ Blogs ] [ Car Ads ] Warrens, Wisconsin
 
Posted by koolstuff0099  -  11/15/2007 07:31 AM
Dot 5 is silicone. I believe it has a much higher boiling point and helps with a moisture problem when storing a car for a period of time.......BUT, I'm told by a good customer that owned and drove a 800HP "super Modified" up here in the northeast that Dot5 gave him a "mushy" brake pedal. Personally I would stick with dot 4.
Koolstuff [ View ] [ Email ] [ Blogs ] [ Car Ads ] Newburyport, Massachusetts
 
Posted by Italianguy63  -  11/15/2007 08:58 AM
Use Castrol Dot 4.
Speed is about how fast do you want to spend! [ View ] [ Email ] [ Blogs ] [ Car Ads ] Bartow, Florida
 
Posted by Crazyhorse Rod Shop  -  11/15/2007 03:51 PM
i use 3 or 4. i also buy it in the smallest bottle. every time that cap comes off air and moisture enter.
dont poke the porchdog........he bites [ View ] [ Email ] [ Blogs ] [ Car Ads ] BLUFF DALE, Texas Charter Member since March 2003
 
Posted by Streetrodder007  -  11/15/2007 10:34 PM
Shine makes a great point that I always belive in. Buy brake fluid in small bottles, and throw that crap out when finished. old brake fluid from a shelf is full of moisture, and is brakings worst enemy !
Streetrodder007 [ View ] [ Email ] [ Blogs ] [ Car Ads ] Port Huron, Michigan Charter Member since April 2006
 
Posted by APLUS  -  11/16/2007 05:20 AM
We used old brake fluid as a lubricant for busting loose rusted nuts and bolts on air conditioning chill water pumps and cooling tower gear boxes. You might try it (let it soak) on rusted car nuts & bolts, just don't use it around painted surfaces. Otherwise, throw the stuff out after using once.
Use DOT 3 or 4, not the silicone stuff.
APLUS [ View ] [ Email ] [ Blogs ] [ Car Ads ] Austin, Texas
 
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