Dot 5 brake fluid - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 1Likes
  • 1 Post By davidpozzi
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old Sep 5th, 18, 06:21 PM Thread Starter
Senior Tech
Derek
 
Join Date: Jan 2015
Location: Rhode Island
Posts: 126
Dot 5 brake fluid

Over the past 6 months, I have gone through 3 proportional valves that are part of my disc brake conversion kit I bought from Inline Tube. Long story short : The company and myself thought the valves were faulty. Turns out, the rubber used in their braking system components, ie: proportional valves, Is not compatible with the silicone dot 5 fluid. The fluid eats away at the rubber (seals, etc) which then is the site where leaks develop. I talked to a company rep for inline tube and they said dot 5 is the only fluid that you cannot use with their components. I learned this the expensive way. Hopefully this will help others.
Dsabbi is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old Sep 5th, 18, 06:35 PM
Senior Tech
Simon
 
Join Date: Jul 2009
Location: Toronto, Canada
Posts: 470
Garage
Re: Dot 5 brake fluid

Dot 3 & 4 are the only grades to use and not to mix with 5, lesson learned.
I've been using Wilwood Dot 3 fluid with a high boiling point, flushed the system when I upgraded the front brakes.
Make sure you flush your brakes to try and clear the silicone stuff, residue.
slazisme is offline  
post #3 of 10 (permalink) Old Sep 5th, 18, 08:29 PM
Senior Tech
Chick
 
68camaroz28's Avatar
 
Join Date: May 2005
Location: York, PA
Posts: 2,804
Garage
Re: Dot 5 brake fluid

Quote:
Originally Posted by Dsabbi View Post
Over the past 6 months, I have gone through 3 proportional valves that are part of my disc brake conversion kit I bought from Inline Tube. Long story short : The company and myself thought the valves were faulty. Turns out, the rubber used in their braking system components, ie: proportional valves, Is not compatible with the silicone dot 5 fluid. The fluid eats away at the rubber (seals, etc) which then is the site where leaks develop. I talked to a company rep for inline tube and they said dot 5 is the only fluid that you cannot use with their components. I learned this the expensive way. Hopefully this will help others.
I know a lot of people that state they use Silicone brake fluid with no issues. I have it in one of our cars with no issues to date and its 5 years in after restoration. All others have Dot3 in and know from our 68Z restoration "White Post Restorations" clearly states on their warranty use of Silicone Brake Fluid voids the warranty.

Chick
68, 69, & 2015 Z/28's
69 Nova's L34 Father/Son & L78 Surv purch-new
67, 68, & 2015 Z06 Corvettes
Our 68Z Restoration
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
68camaroz28 is offline  
 
post #4 of 10 (permalink) Old Sep 6th, 18, 05:35 AM
Gold Lifetime Member
keith
 
X-77 keith's Avatar
 
Join Date: Nov 2011
Location: America
Posts: 2,772
I use dot 5 in all the cars that I build that are not daily drivers. Never had an issue. Not once.

X-77 keith
1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018

Last edited by X-77 keith; Sep 6th, 18 at 04:44 PM.
X-77 keith is offline  
post #5 of 10 (permalink) Old Sep 6th, 18, 06:28 AM Thread Starter
Senior Tech
Derek
 
Join Date: Jan 2015
Location: Rhode Island
Posts: 126
Re: Dot 5 brake fluid

so since i am having issues,,,,, do i swap out the entire system?? master cylinder, brake lines, hoses etc etc ???
Dsabbi is offline  
post #6 of 10 (permalink) Old Sep 6th, 18, 08:38 AM
Gold Lifetime Member
keith
 
X-77 keith's Avatar
 
Join Date: Nov 2011
Location: America
Posts: 2,772
I would replace the rubber hoses. The rest can be cleaned with denatured alcohol.should be fine.

X-77 keith
1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018
X-77 keith is offline  
post #7 of 10 (permalink) Old Sep 6th, 18, 03:28 PM
Gold Lifetime Member
Steve
 
Join Date: Apr 2002
Location: Southeast Pa.
Posts: 1,479
Re: Dot 5 brake fluid

I have dot 5 in the bike. It was called for. I have replaced it a few times and never noticed an issue with it. Not sure why harley specíed, either water or boiling point i guess. The boiling point issue isnt relevant any more . Harley doesnt spec it any more either i dont think. It has a rep of messing with abs.

67RSSS......owned since 69. A basket case for most of it.
3d cad is offline  
post #8 of 10 (permalink) Old Sep 6th, 18, 03:33 PM
Moderator
John
 
Vega$69's Avatar
 
Join Date: Sep 2010
Location: Vegas NV/Wesley Chapel FL
Posts: 12,072
Garage
Re: Dot 5 brake fluid

Wilwood instructions read do not use DOT 5 with their products.

66 Chevelle Protour LS3/525(SOLD AT Mecum 2018)
69 SS396 Cortez Silver(SOLD)
69 Z28(Sold)
69 Pro Tour - LS3/T56
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(SOLD)
69 Pro Tour - LS7/T56 (SOLD)
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

69 Z28/RS Tribute355/5 Speed (SOLD)
69 RS Clone 427/TH400 (SOLD)
67 RSZZ502/5 Speed (SOLD)
69 Camaro 406 SBC/TH400 (SOLD)
Vega$69 is offline  
post #9 of 10 (permalink) Old Sep 6th, 18, 04:23 PM
Gold Lifetime Member
Scott
 
scblucam's Avatar
 
Join Date: May 2005
Location: Houston, TX
Posts: 2,334
Garage
Re: Dot 5 brake fluid

I have been using DOT 5 for years with no problems. SSBC conversion.

68 302 M20 - 85 IROC Z
The older I get the faster I was.
scblucam is offline  
post #10 of 10 (permalink) Old Sep 7th, 18, 10:27 PM
Moderator
David Pozzi
 
davidpozzi's Avatar
 
Join Date: Nov 1999
Location: Central California, USA
Posts: 10,055
Re: Dot 5 brake fluid

I would not use DOT5 fluid. Iíve seen problems with cars run on the track that reversed when they switched back to normal fluid. It might work on a street driver, but it might not. The compressibility is greater, so you may have a spongy pedal feel. In addition to other problems. Thanks for the seal info.
slazisme likes this.

Check my web page for First Gen Camaro suspension info:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

67 RS 327 original owner. 1965 Lola T-70
davidpozzi is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome