This will take you to the main site where there is history, technical information and other information on these cars.
This takes you back to the main page of the forums.
This is the control panel to change your password, information and preferences on this message board.
Click here if your lost your password or need to register on this message board. You must be a registered user to post. Registration is free.
Search this board for information you need.
Click here to buy cool Squarebirds mechandise.
Click here to support For $20 annually receive 20mBytes webspace, a Squarebirds e-mail address and member's icon on the message board.
Old 02-11-2013, 11:16 PM
gas62tbird gas62tbird is offline
Join Date: Feb 11 2013
Posts: 41
gas62tbird is on a distinguished road
Question Heavy Duty Brake Fluid

I am the new owner of a 62 tbird and the owners manual says to use ford heavy duty brake fluid,does this still hold true in 2013 or can I use synthetic DOT3 wiyhout having leaks.
TKS in advance for your input.
Reply With Quote
Old 02-12-2013, 12:41 AM
YellowRose's Avatar
YellowRose YellowRose is online now
Super-Experienced and a HELLOFA nice guy
Join Date: Jan 21 2008
Posts: 12,533
YellowRose is on a distinguished road
Default Heavy Duty Brake Fluid

Hi Gas! Welcome to the Forum, again! I would think that it might be a good idea to try and determine what brake fluid is in the MC now, if possible. If you mix different kinds of brake fluid you are probably going to have problems. You might want to drain all the brake fluid out, and do a bench bleed then put in what you want to. If the brake fluid has been in that car for many years, it probably needs to be replaced anyway. Probably the best person to answer your question would be our webmaster, Dave ~ simplyconnected. He is on the Forum now and he certainly knows the best answer to your question.

Ray Clark - Squarebirds Administrator
'59 Tbird "The Yellow Rose Of Texas" aka "Tweety Bird"
"It's Hip To Be Square"
Thunderbird Registry #33025 VTCI #11178

Contact me via Private Message or (Home) 210-674-5781 (Cell) 210-875-1411
Reply With Quote
Old 02-12-2013, 01:34 AM
simplyconnected's Avatar
simplyconnected simplyconnected is offline
Slow Typist
Join Date: May 26 2009
Posts: 7,481
simplyconnected is on a distinguished road

Thanks, Ray. Yes, your car came with DOT-3 and Ford still puts it in their cars and trucks. Why? Because it is still the best brake fluid. The only important fact they left out of your Maintenance Schedule is to change it at LEAST every three years (or sooner). Ford puts this into their new car Maintenance Schedules, now.

Ray is right about keeping your brake fluid fresh. All fluid goes in clear, then something happens inside your lines that turn it brownish red; rust.

DOT-3 is glycol-based and compatible with DOT-4, but not DOT-5. It also sucks up water (faster than Scotch), keeping your brake lines rust free until saturation sets in.
DOT-5 is silicone-based, and gives a slightly 'spongy' feel.

Here's a simple test if you need to identify what you have in your system: Take a few drops from your M/C and drop them in a small container of water. DOT3 will completely dissolve and mix into the water. DOT5 will not.

If you ever need to flush your system to prepare it for another type of fluid, use plenty of alcohol.

Always keep petroleum products away from DOT-3 as it will bloat your seals. Use clean brake fluid to ‘wash’ your rubber brake parts before assembly. Most of those “Brake Cleaner” spray cans are petroleum-based and dangerously flammable. I found out the hard way. The first time I applied the brakes, they wouldn’t retract and kept the brakes on. Sure enough, the seals were bloated a lot.

Hope this helps. - Dave
My latest project:
CLICK HERE to see my custom hydraulic roller 390 FE build.

"We've got to pause and ask ourselves: How much clean air do we need?"
--Lee Iacocca
Reply With Quote

Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 05:56 PM.

Driving, racing or working on cars can be hazardous. The procedures and advice on this website including the message board are opinion only. and its webmasters and contributors do not guarantee the correctness of the advice and procedures. The and its webmasters assume no liability for any damage, fines, punishment, injury or death resulting from following these procedures or advice. If you do not have the skills or tools to repair your car, please consult a professional. By using this site you agree to hold harmless the, its authors and its webmasters from any resulting claim and costs that may occur from using the information found on this site.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Any submissions to this site and any post on this site becomes property of . The webmasters reserve the right to edit and modify any submissions to this site. All material on this is site is copyrighted by the Reproduction by any means other than for personal use is strictly prohibited. Permission to use material on this site can be obtained by contacting the webmasters. Copyright 2002-2016 by