Brake fluid for 993
11-01-2002, 01:08 PM
#1
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Brake fluid for 993
I had a quick look in the Porsche driver's manual for the correct brake fluid to flush my system with but the manual just says "use only original Porsche brake fluid".
Hmmm, not very helpful. I assume that a generic fluid is used.
What is the standard brake fluid I should use, and is there a better one which people would recommend over the standard?
I am not going to use a silicon based fluid for the moment, though I am tempted to try this in future (because it is not hygroscopic and not corrosive). Any comments about the use of this in a 993 would also be welcome!
I am about to attempt to pressure bleed my system for the first time after realising how soggy my brake pedal has become.
Graham
Hmmm, not very helpful. I assume that a generic fluid is used.
What is the standard brake fluid I should use, and is there a better one which people would recommend over the standard?
I am not going to use a silicon based fluid for the moment, though I am tempted to try this in future (because it is not hygroscopic and not corrosive). Any comments about the use of this in a 993 would also be welcome!
I am about to attempt to pressure bleed my system for the first time after realising how soggy my brake pedal has become.
Graham
11-01-2002, 01:23 PM
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Graham,
Many of us use ATE Super Blue, which is a high temperature D.O.T. 4 brake fluid. My understanding is that silicone brake fluid is NOT to be used in our cars, as it is not compatible with the rubber seals in the brake system. Stick to a top quality D.O.T. 4 fluid, like the ATE or Castrol GT LMA. I know several people who use Ford Heavy Duty brake fluid, which actually has a pretty high wet boiling point.
Richard
Many of us use ATE Super Blue, which is a high temperature D.O.T. 4 brake fluid. My understanding is that silicone brake fluid is NOT to be used in our cars, as it is not compatible with the rubber seals in the brake system. Stick to a top quality D.O.T. 4 fluid, like the ATE or Castrol GT LMA. I know several people who use Ford Heavy Duty brake fluid, which actually has a pretty high wet boiling point.
Richard
11-01-2002, 03:02 PM
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I agree with Rick in Portland!
ANY attempt to introduce silicon in a liquid form in our cars would be DISASTEROUS!!!
Might give a nice HARD brake pedal though, eh? <img src="graemlins/roflmao.gif" border="0" alt="[hiha]" />
ANY attempt to introduce silicon in a liquid form in our cars would be DISASTEROUS!!!
Might give a nice HARD brake pedal though, eh? <img src="graemlins/roflmao.gif" border="0" alt="[hiha]" />
11-01-2002, 03:16 PM
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[quote]Originally posted by Richard C2S:
<strong>Graham,
Many of us use ATE Super Blue, which is a high temperature D.O.T. 4 brake fluid. My understanding is that silicone brake fluid is NOT to be used in our cars, as it is not compatible with the rubber seals in the brake system. Stick to a top quality D.O.T. 4 fluid, like the ATE or Castrol GT LMA. I know several people who use Ford Heavy Duty brake fluid, which actually has a pretty high wet boiling point.
Richard</strong><hr></blockquote>
The Ford Heavy Duty (Truck) fluid does NOT have an especially good wet boiling point. It's specs are virtually identical to AP550. Not that I think it is bad fluid - that is all I run in my race cars, but they get flushed alot and I am not worried about wet performance.
<strong>Graham,
Many of us use ATE Super Blue, which is a high temperature D.O.T. 4 brake fluid. My understanding is that silicone brake fluid is NOT to be used in our cars, as it is not compatible with the rubber seals in the brake system. Stick to a top quality D.O.T. 4 fluid, like the ATE or Castrol GT LMA. I know several people who use Ford Heavy Duty brake fluid, which actually has a pretty high wet boiling point.
Richard</strong><hr></blockquote>
The Ford Heavy Duty (Truck) fluid does NOT have an especially good wet boiling point. It's specs are virtually identical to AP550. Not that I think it is bad fluid - that is all I run in my race cars, but they get flushed alot and I am not worried about wet performance.
11-01-2002, 10:19 PM
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Graham
Here's a link to a page I bookmarked a while back w/a comparison of several of the more popular higher performance street/track fluids. The author's conclusion is, ATE Type 200 and Super Blue are not only the cheapest of the performance brake fluids, they are also the cheapest per degree of boil protection, and have a very high 6-month BP estimate.
<a href="http://www.swedishbricks.net/700900FAQ/Brake%20Fluid%20Comparison.htm" target="_blank">Brake Fluid Comparison Link</a>
PS Yes. It is a Volvo owners site!
Here's a link to a page I bookmarked a while back w/a comparison of several of the more popular higher performance street/track fluids. The author's conclusion is, ATE Type 200 and Super Blue are not only the cheapest of the performance brake fluids, they are also the cheapest per degree of boil protection, and have a very high 6-month BP estimate.
<a href="http://www.swedishbricks.net/700900FAQ/Brake%20Fluid%20Comparison.htm" target="_blank">Brake Fluid Comparison Link</a>
PS Yes. It is a Volvo owners site!
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11-02-2002, 01:20 AM
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When my local German Porsche mechanic changed the brake fluid for the 15K service he used Pentosin DOT4. Said it was the "factory" fill brand. When so far as to wire a nice tag with the Pentosin logo and the change date to the brake reserve tank.
Anyone know if Pentosin is any good?
Anyone know if Pentosin is any good?
