[quote name='nopistons94' date='May 26 2005, 12:25 PM']got this information from http://www.se-r.net/brakes/fluid.html. I wouldn't use DOT5 on a street drivin application. You DO NOT NEED that kind of fluid for the driving your doing.


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good info thanks a lot! looks like we need to drain the entire system and re bleed, and that sucks.



strange that he says it is not compatible then he says it must be compatible

[quote name='Shane.Trammell' date='May 26 2005, 02:27 PM']which one?



this was a personal call from the cell of my friend to the cell of steve and thats what he said to get while we were at the parts store talking to him on the phone. steve knows that this is a street car and recommended accordingly im sure.



if there was a problem with the d5 wouldnt it have already come up? is that something that would be ok for a while and then change?


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If you read what was gone over in the quote I had, your not supposed to mix DOT5 with any other DOT level. DOT5 contains high amounts of silicone which can cause internal problems in a braking system... especically a STOCK braking system. Rotors warping and other such problems will arise at some point im sure.. or maybe not. Up to you what you want to do, I can't make any decisions for you. I wouldn't personally run DOT 5 in any of my cars though.

can someone clean this thread up a little and maybe add it to the FAQ section? DOT 5 brake fluid is a good subject to have information on...

[quote name='nopistons94' date='May 26 2005, 12:31 PM']If you read what was gone over in the quote I had, your not supposed to mix DOT5 with any other DOT level. DOT5 contains high amounts of silicone which can cause internal problems in a braking system... especically a STOCK braking system. Rotors warping and other such problems will arise at some point im sure.. or maybe not. Up to you what you want to do, I can't make any decisions for you. I wouldn't personally run DOT 5 in any of my cars though.


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what the quote said is that you can mix them bc they are all dot fluids. the warping rotors issue was a point they were making that if you needed the high temp capabilities of the d5 you are gonna be breaking stock stuff at those high temps.

i dont see how the fluid itself would cause problems in the system. its not corrosive, certainly not more than d3 fluid, so its not gonna hurt the inside of lines and other stuff.

[quote name='Shane.Trammell' date='May 26 2005, 03:10 PM']what the quote said is that you can mix them bc they are all dot fluids. the warping rotors issue was a point they were making that if you needed the high temp capabilities of the d5 you are gonna be breaking stock stuff at those high temps.

i dont see how the fluid itself would cause problems in the system. its not corrosive, certainly not more than d3 fluid, so its not gonna hurt the inside of lines and other stuff.


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It contains a high level of silicone which is not good for a daily drivin braking system due to the higher heat and such caused by the thicker fluid.

ok here it is plain and simple.



to switch to dot5 would be the same as switching your motor form mineral to synthetic.



its reccommend that you fully drain the old fluids out (including calipers, cylinders, lines etc). Once emptied some people reccommend letting it sit a day or two opened so it can dry out/evaporate (of course indoors, or at least not in a rainy/humid area). After that then you put in the dot5.



any problems occuring from mixing dot5 with 3 or 4 are longterm things, menaing you wont notice it right away but your lines are more likely to corrode from the inside out, which means corrosion could flow through the line spossibly clogging them or damaging other components.



theres a lot of possibilities, how long does it take to see these effects? no clue.



kevin.

umm yea they r all right above lol teknics and them DOT 5 is geared towards racing application...its got a much higher boiling point (500 degF dry, 356 degF wet) so yea meant for track use that sorta thing

[quote name='rotary_pwr' date='May 26 2005, 06:21 PM']umm yea they r all right above lol teknics and them DOT 5 is geared towards racing application...its got a much higher boiling point (500 degF dry, 356 degF wet) so yea meant for track use that sorta thing


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but its also thicker as well keep in mind.....

very good info here: http://av.rds.yahoo.com/_ylt=A0Je5XYjT5ZCK...71D016C8AA5.pdf



looks like bad news for us

wow thats bad news bears for you guys...





But that just proves my point... DO NOT run dot 5 on a street drivin car. And it wont even work properly with ABS systems like that article says, which is another reason NOT to run it on the street as more than half of us FD guys still run ABS. DOT5 is also more prone to spongy brakes as the make up of the fluid is thicker and heavier.