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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Brakes » All Dot 5 is not equal? « Previous Next »

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Rick_a
Posted on Friday, April 23, 2010 - 01:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've been using H-D Dot 5 brake fluid for several months as it was free and all I have on hand. It really seems to be lacking. After a track day the front brake fluid smelled and looked cooked (leaving some nasty residue), and in general street use the rear fluid literally boils off in the reservoir (factory rearsets put the reservoir near the rear header...an all aluminum reservoir is used). I've never seen this before and didn't have this problem with the Buell stuff.
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Sparky
Posted on Friday, April 23, 2010 - 12:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How fresh is it?

I've used the H-D stuff before and it's worked well for me but then my setup is all stock. Perhaps there was some sort of contamination like humidity in the container you used?

I'd look into adding some kind of heat shield for that rear reservoir to protect not only the fluid but the hose, etc., if it's getting hot enough to boil silicone brake fluid.
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Alchemy
Posted on Friday, April 23, 2010 - 12:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've tried Motul 600 which has a higher heat rating I believe. Take your wallet with you however.
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Rick_a
Posted on Friday, April 23, 2010 - 06:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It was fresh from a sealed container. I'm going to try re-routing the reservoir for the time being. This setup has been fine for about five years. The only thing that has changed is the brand of brake fluid. I have a several years supply so I'd like to make it work.

Thanks for the input. I'll definitely use something different for the track. Russell and EBC look like some decent alternatives, as well.
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