Switching types of brake fluid (5.1 to 4) - Yamaha R6 Forum: YZF-R6 Forums
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-26-2012, 09:37 AM Thread Starter
My R6 eats me.
 
Join Date: Nov 2012
Posts: 2
Switching types of brake fluid (5.1 to 4)

Hi - noob here!

Just bought an 09 R6 to replace my old and tired 636. Love it so far.

Quick question though:

The guy I bought it from had put DOT 5.1 fluid in the brakes. The brakes are spongy and I'd like to bleed them. I've always used DOT 4 in my bikes. My understanding is that you are not supposed to mix 5.1 and 4.

Can I just run a bunch of DOT 4 through in order to replace all of the 5.1 that's in the system? I think I read something about using DOT 4 after 5.1 having an effect on the seals (around the brake pistons)?

Thanks,

Brian
priorityR6 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 11-26-2012, 10:10 AM
I eat my R6
 
Rocky5000100's Avatar
 
Join Date: Mar 2012
Location: Southeast Wisconsin
Posts: 1,874
Bike: 2003 Track SV650, 05 R6
Re: Switching types of brake fluid (5.1 to 4)

Yes, just run a bunch through to clear out the old stuff.
Rocky5000100 is offline  
post #3 of 5 (permalink) Old 11-26-2012, 12:20 PM Thread Starter
My R6 eats me.
 
Join Date: Nov 2012
Posts: 2
Re: Switching types of brake fluid (5.1 to 4)

Not to sound more noobish but should I bother to go back to 4 from 5.1 in the first place? Bike is mostly for the track. I never used to wrench on my own stuff. Just looking to learn.
priorityR6 is offline  
post #4 of 5 (permalink) Old 11-26-2012, 12:55 PM
I eat my R6
 
Rocky5000100's Avatar
 
Join Date: Mar 2012
Location: Southeast Wisconsin
Posts: 1,874
Bike: 2003 Track SV650, 05 R6
Re: Switching types of brake fluid (5.1 to 4)

Quote:
Originally Posted by priorityR6 View Post
Not to sound more noobish but should I bother to go back to 4 from 5.1 in the first place? Bike is mostly for the track. I never used to wrench on my own stuff. Just looking to learn.
Yes. Get 4.

Motul RBF600 or ATE Superblue are the two best choices.
Rocky5000100 is offline  
post #5 of 5 (permalink) Old 11-26-2012, 01:04 PM
I eat my R6
 
Join Date: Aug 2012
Posts: 264
Re: Switching types of brake fluid (5.1 to 4)

Alot of people prefer the DOT4. Just be aware. DOT 3,4, and 5.1 ( NOT DOT 5) are glycol based. Where DOT 5 is silicon based. DO NOT put DOT 5 in your system. IMO mixing (even though possible) is a bad idea, do a good flush if you want to use DOT4. Some DOT 4 fluids have higher boiling points than DOT 5.1, so there are reasons why they do it. When it comes down to it, they put 5.1 in the factory for a reason, unless youre competative enough to actually feel the difference, just leave it alone

Just my 2 cents.
SlickXR6 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha R6 Forum: YZF-R6 Forums 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 for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Brake fluid Chisel24 Oil and Lubrication 29 04-03-2013 05:59 AM
Brake Fluid Glock Oil and Lubrication 6 06-22-2011 04:09 AM
Twisted front wheel, old brake fluid, and brake drag pseager Garage / Mechanical Help 2 06-17-2010 07:19 PM
How to change brake fluid/steel brake lines? r6-flame General Discussions 8 03-28-2009 04:11 PM
Brake Fluid mk_r6 Garage / Mechanical Help 0 07-12-2007 11:20 PM

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