Brakes are SOOO spongey!
Posted May 19, 2004 - 06:58 AM
I am thinking that I may have mixed some incompatible brake fluids. Would 5.1 not mix with 4?
Let's just say that I did mix some stuff that does not work together. What kind of fix is required? Bleeding the entire system, cleaning and re-filling the system, or, would I have to replace the rubber that holds the pistons?
Posted May 19, 2004 - 07:39 AM
Posted May 19, 2004 - 07:51 AM
Posted May 19, 2004 - 11:13 AM
This is BAD, BAD, BAD. Can't remeber exactly why off the top of my head, but I know that it's not good. Something to due with silicone or something.
Like the other guy said, replace all of your fluid with Dot 4 and keep bleeding your brakes until they feel better. Sometimes the bleeding prodedure can take a while depending where the air is trapped in your brake lines.
Posted May 19, 2004 - 01:34 PM
Ok. I am going to bleed both systems, and ensure that I am running nothing but pure brake fluid, of only one sort!
Hopefully that will solve the issue.
Posted May 19, 2004 - 04:45 PM
5.1 is a higher temp than the DOT4, as far as I have seen it is compatible. But NOT needed by any means. DOT 4 or some Castrol LMA (which I would suggest) is all you need.
Flush the system with some cheap DOT3 you can get from the parts store. Be SURE that you tape the threads on the bleeder screws with teflon tape. otherwise with the vacuum method you will suck air from the threads at the bleeder screws.
Posted May 19, 2004 - 06:38 PM
Posted May 24, 2004 - 08:57 AM
Posted May 24, 2004 - 09:31 AM
Posted May 24, 2004 - 01:40 PM
BUT, moisture eventually gets into the system. If you are using 5, the moisture settles to the bottom. In our case it is the caliper. I dont even know how to describe the rust looking stuff that the caliper turns into. My brakes on my 79 XS 1100 had to be discarded after using 5 for two years. It was very misleading. The fluid looked great, but the brakes became more and more mushy.
Years ago Motorcyclist magazine could not sing the praises enough of this fluid. They had everyone change over to it.
This was when I realized magazines were for entertainment only.