Seeking the Truth about Brake Fluid

[Skarkull]

Ok, I have done some reading on brake fluid, and I know that your are not supposed to use a DOT5 fluid on a car that is not made for it. But what is the difference between DOT3 and DOT4? DOT4 I know offers I higher boil point, and I would think would be a superior product to use in our car if we were doing... let say, some road racing. The 2005 Mustang Owners Manual says to use a DOT3, but is our system compatable with a DOT4? I know it is only a 57* difference but that could make all the difference in the world.

-James

 

[darkstar november]

i use endless S FOUR in mine. its a dot 4 and boils at 543dry 349 wet


we put that in every car we work on for road racing in our shop

 

[Skarkull]

Yea, but if we can use a DOT4, then I would use the Wilwood. 626 dry and 417 wet.

 

[darkstar november]

my point was more the dot 5 thing

hell run dot 5.1 if you want. 5.1 is not silicone based like 5 is

 

[Brain_Mach1]

For some one who has not been researching fluid and doesn't care as much, the biggest thing to notice is the wet number. Change the fluid to keep it dry and discard open containers.

 

[GIG4FUN]

moved to chat

 

[Skarkull]

WTF? Why would you move it to chat? I'm seeking information on if you can use DOT4 in a S197.

 

[Gray Ghost GT]

WTF? Why would you move it to chat? I'm seeking information on if you can use DOT4 in a S197.

You can use DOT 4 in a S197. I use ATE Super (Blue or Gold) in my GT, which is great for the road courses, and you don't have to change it as often if you also daily drive your car. If you want a slightly better DOT 4, but will require you to change it more often, go with Motul RBF600.

 

[Skarkull]

Also, I thought our clutch and brakes run off the same resevior, will changing fluids effect the slave cylinder

 

[RDK]

580F and 410F wet for AMSOIL.. I have been using it with no problems..

also Project Mu 635 F boiling point..
http://www.mackinindustries.com/md/projectmu/brakefluid.html

 

[JeremyH]

WTF? Why would you move it to chat? I'm seeking information on if you can use DOT4 in a S197.

Not only is this not tech, but a simple search of the corner carving section will bring up multiple threads all about brake fluid.

 

[Skarkull]

A day late, a dollar short, and about 1/2 a year behind.

 

[JeremyH]

A day late, a dollar short, and about 1/2 a year behind.

haha good call, someone bumped and an old thread for sure, dope.