Who knows the fluid capacity of...
05-14-2003, 01:38 PM
#31
Originally posted by Bassem
however, the last time i did a change on a car that the fluid was over 8 months old, i was extremely surprised: the first four or five bleeds turned up some nastiness, decreasing with every subsequent bleed. pretty normal. the next three turned up no dark sludge or anything...so i thought we were done with that caliper. for whatever reason i decided to go for one more, and to my surprise there was a "plume" of dark residue that shot out with the brake fluid. needless to say we kept on bleeding until i made absolutely sure there was no more crap coming out of that caliper.
however, the last time i did a change on a car that the fluid was over 8 months old, i was extremely surprised: the first four or five bleeds turned up some nastiness, decreasing with every subsequent bleed. pretty normal. the next three turned up no dark sludge or anything...so i thought we were done with that caliper. for whatever reason i decided to go for one more, and to my surprise there was a "plume" of dark residue that shot out with the brake fluid. needless to say we kept on bleeding until i made absolutely sure there was no more crap coming out of that caliper.
I have never had discolored brake fluid from any car, especially the S2000 or a car with 'new' 8-month fluid. What kind of brake change/problems have you been dealing with?
05-14-2003, 01:52 PM
#32
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in that particular case there was some pretty bad brake fade.
but in any case for the majority of the (dozen or so) times that i actually had the time to personally do a brake fluid change, there almost always was some crap in the fluid. the fluid itself was not different than usual, but i could definitely see dark "stuff", for lack of a better word, floating with the fluid. this was on my m3, s2000, gone but not forgotten subaru and good buddy's eclipse.
i was told by one techthat it was due to "boiled fluid", and by another that it was the reaction between the fluid and moisture. i dont reallybuy either arguement, but i know that dark crap in my brake fluid line does not belong! but i guess i do tend to overuse my brakes, so perhaps it is from overcooking them....
in any case, i do clean the area around the nipple as well to make sure i'm not picking brake dust up, so i'm pretty sure it is not that. i also use clear tubing on the nipple so i know i'm not seeing things!
bassem
but in any case for the majority of the (dozen or so) times that i actually had the time to personally do a brake fluid change, there almost always was some crap in the fluid. the fluid itself was not different than usual, but i could definitely see dark "stuff", for lack of a better word, floating with the fluid. this was on my m3, s2000, gone but not forgotten subaru and good buddy's eclipse.
i was told by one techthat it was due to "boiled fluid", and by another that it was the reaction between the fluid and moisture. i dont reallybuy either arguement, but i know that dark crap in my brake fluid line does not belong! but i guess i do tend to overuse my brakes, so perhaps it is from overcooking them....
in any case, i do clean the area around the nipple as well to make sure i'm not picking brake dust up, so i'm pretty sure it is not that. i also use clear tubing on the nipple so i know i'm not seeing things!
bassem
05-14-2003, 01:56 PM
#33
When I did my clutch bleed/flush, there was similar black crud in the reservoir. It took a few "add in/suck out" cycles to get rid of it. The stuff seemed to be adhering to the sides and bottom of the reservoir.
05-14-2003, 02:41 PM
#35
I know the 'black cloud' of grungy brake fluid or clutch when I see it. It was 'normal' whenever I bleed my old MG... that was before I replaced all lines, flushed everything, and went to silcone - now it's nothing but clean purple.
I always figured it was just some of the minute crude from older seals, and the constent churning with the master cylinder, etc. I doubt if it has to with boiling the fluid. I don't recall seeing any black cloud when I flushed out the OEM brake fluid on my S2000, but I may have. It wouldn't excite me if I did.
I always figured it was just some of the minute crude from older seals, and the constent churning with the master cylinder, etc. I doubt if it has to with boiling the fluid. I don't recall seeing any black cloud when I flushed out the OEM brake fluid on my S2000, but I may have. It wouldn't excite me if I did.
05-15-2003, 07:34 PM
#37
bassem,
I raised the issue of the brake fluid color change, i.e. the black cloud look with my techy racer friend today while we were on the way to the racing goodies store to pick up stuff. His one word answer, "Heat". But, he never answers things that simple, and for the next 1/2 hour I heard a dozen stories but I'll spare you that.
I raised the issue of the brake fluid color change, i.e. the black cloud look with my techy racer friend today while we were on the way to the racing goodies store to pick up stuff. His one word answer, "Heat". But, he never answers things that simple, and for the next 1/2 hour I heard a dozen stories but I'll spare you that.
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