Which DOT 5.1 Brake Fluid?

CC268
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CC268
Edited Date/Time 11/3/2014 12:36am
I have an 09 CRF450 that I would like to throw some 5.1 fluid in as I have trouble with my front brake getting really mushy.

I would like to order from Motosport because I am buying the Motion Pro Brake Bleeder as well. I think the choices are Motul, Repsol, and Motorex.
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Skerby
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Skerby 11/2/2014 10:37am
11/2/2014 10:37am
Dot 4! Never had a problem and the stuff is like free. I've heard that 5.1 is harder to work with, never used it tho.
MxKing809
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MxKing809 11/2/2014 10:39am
11/2/2014 10:39am Edited Date/Time 11/2/2014 10:43am
Motul 600 is what I've always used. I boiled a few other bands doing enduros and had great luck with Motul.
Cygnus
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Cygnus 11/2/2014 10:42am
11/2/2014 10:42am
Motul here too.

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Cygnus
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Cygnus 11/2/2014 10:57am
11/2/2014 10:57am Edited Date/Time 11/2/2014 10:58am
Yea I've been going crazy around here since I was robbed a few weeks back trying to get my security beefed up.
CC268
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CC268 11/2/2014 11:06am
11/2/2014 11:06am Edited Date/Time 11/2/2014 11:18am
Looks like Motul is the choice...5.1 is $9 and the Motul 600 is $19.

I hate to spend $20 for brake fluid...

I don't mind using DOT 4 if you guys have a quality recommendation.
2strokerider 11/2/2014 11:25am
11/2/2014 11:25am
i use shell advance road race 5.1 fluid- used to have loads of problems boiling the brakes using 4. Found the shell 5.1 to be really good- would recommend it! was fairly cheap too
CC268
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CC268 11/2/2014 12:39pm
11/2/2014 12:39pm
Any other recommendations?
endurox
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endurox 11/2/2014 4:25pm
11/2/2014 4:25pm
the NAPA 5.1 has a very high temp rating
pummel
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pummel 11/2/2014 4:32pm
11/2/2014 4:32pm
Mushy brake is likely not from the kind of fluid. More likely some air in the line. Front brakes are pretty hard to cook fluid in on a motocross track. Back brakes are pretty easy.
Cygnus
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Cygnus 11/2/2014 4:36pm
11/2/2014 4:36pm
pummel wrote:
Mushy brake is likely not from the kind of fluid. More likely some air in the line. Front brakes are pretty hard to cook fluid in...
Mushy brake is likely not from the kind of fluid. More likely some air in the line. Front brakes are pretty hard to cook fluid in on a motocross track. Back brakes are pretty easy.
Yes this is true. An old stock brake line can cause mush too.
queen of spodes 11/2/2014 4:49pm
11/2/2014 4:49pm
pummel wrote:
Mushy brake is likely not from the kind of fluid. More likely some air in the line. Front brakes are pretty hard to cook fluid in...
Mushy brake is likely not from the kind of fluid. More likely some air in the line. Front brakes are pretty hard to cook fluid in on a motocross track. Back brakes are pretty easy.
x2

Do you have an air compressor? If so, this is what you need to tighten those brakes up.
Spooner
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Spooner 11/2/2014 5:20pm
11/2/2014 5:20pm
Silkolene Pro Race 2000 is really good stuff too. I have more of a roadrace background and I had great luck with it, even better than the Motul. I agree, sponginess is not the fault of the brake fluid.
jmc2
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jmc2 11/2/2014 5:21pm
11/2/2014 5:21pm
Maxima is what I just used a few weeks ago and it seems to do the job.
CC268
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CC268 11/2/2014 10:12pm
11/2/2014 10:12pm
Thanks guys, I may just pick up some DOT4 from a local shop here
SwapperMX
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SwapperMX 11/2/2014 10:16pm
11/2/2014 10:16pm Edited Date/Time 11/2/2014 10:16pm
On that topic, the Dot 5.1 is an ABS brake fluid, and not necessary for MX bikes. The Motul Dot 3/4 would do the job, but the Motul RBF 600 or RBF 660 is the way to go to ensure you don't boil your brakes, especially the rears, which are much more prone. Buy the good stuff and do both at the same time, and then you know it's good !!

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