Alex,
I don't want you to think that I disagree with you because I don't like you as I don't even know you; but when I see something that I know is incorrect, I've got to speak up. Dot 3 and Dot 4 are by definition glycol-based brake fluids which are very hygroscopic ( absorb water ), and Dot 5 is silicon-based which doesn't absorb water. That's why you say Dot 5 is not okay as it can't be mixed with the glycol-based fluids; and if you wanted to change to Dot 5, you would have to replace all of your hydraulic components and flush out all the lines. I've never had to do it, but I think you use an alcohol to flush the lines. I don't know why all auto manufacturers don't use silicon-based brake fluids from the factory as you would then probably have very little problems with brake or clutch hydraulic components. Are they in cahoots with the OEM suppliers of brake components, because the major reason we have to replace hydraulics is the corrosion caused by the water absorption
of the glycol-based brake fluids; and this same water absorption causes the boiling point of brake fluid to go down which reduces the effectiveness of your brakes. Using the silicon-based fluid from the factory wouldn't cost that much extra, and it would virtually end your brake maintenance and repair costs; and it would give you better braking. Actually, it's not recommended to mix any different types of brake fluid. And the Citroen system (which operated the brakes, suspension, steering, and auto transmission) and is used also by Rolls-Royce started using regular brake fluid, then went to another type which I don't remember much about, and finally for years has been using a green fluid (vegetable based) which of course is not compatible with anything else. Other cars use this green fluid also, and then there are other different fluids for other systems ( such as power steering ) as on the BMWs that can't be mixed; and Audi uses one of those fluids in their hydraulic
systems. You have to be very careful with fluids in today's cars, or else you can cost yourself alot of money.
Alex Zepeda <alex.zepeda@gmail.com> wrote: On 2/9/06, gary freeman <riven2649@yahoo.com> wrote:
> ATE is Alfred Tevis, the German brake system maker and OEM supplier to
> many European auto manufacturers; and they also make brake fluid. I was
> referring to non-synthetic brake fluid; although you are correct that you
> can't mix the two. There are other systems out there like Citroen and some
> Rolls-Royces that use even different fluids. Actually, disc brake technology
> came from the aircraft industry; but I'm not disputing your point about their
> early work in developing them for auto use, especially in racing. If I
> remember correctly, though, I think the first production car to use them was
> the Triumph TR-2 in maybe 1952 ?
Eh, there are plenty of DOT 3, 4, and 5.1/4+ approved synthetic fluids
out there. Synthetic is a okay, DOT 5 is not (in most situations).
--
alex
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Received on Fri Feb 10 09:31:52 2006
