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Registered
Join Date: Oct 2003
Location: Springfield Ohio
Posts: 122
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Silicone Brake Fluid
Do you need to change silicone brake fluid? I bought my SC 4 years ago, and the previous owner had stainless steel brake lines installed with silicone fluid probably 8 or 9 years before that.
The pedal is firm, no problem. Thanks, Bob
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1978 911 SC |
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10-01-2007, 04:27 PM
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Fuchs w h o r e
Join Date: May 2003
Location: Vancouver, Canada
Posts: 644
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I say no, but many will argue you need to.
Since silicone juice is not hydroscopic, it does not extract moisture from the air, so you don't need to flush out the fluid to remove the water that isn't there. "They" say water will still get in the system and collect at the lower points. When I look down in the reservior, the fluid is clear and there's no water on the bottom. I put silicone fluid in my first car in '94 because I was having severe corrosion problems inside my brake parts when I was using paint stripper. I haven't had one single issue since. Then I converted my second car 7 years ago. no problems either. I have never changed the fluid. |
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10-03-2007, 11:03 PM
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Registered
Join Date: Oct 2003
Location: Springfield Ohio
Posts: 122
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Thanks! Ya, I looked in the reservoir, it is clear also. I appreciate the reply!
Bob
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1978 911 SC |
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10-04-2007, 01:51 AM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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Silicone BF (DOT 5) is not compatible with other BF. Do not mix.
If tiny bubbles are formed (from pouring or other agitation), they can be more difficult to remove from the system. This could result in a spongy or soft pedal. While water isn't absorbed like normal BF, water vapor does enter the system and remains separate. While silicone has a high boiling point, water boils @ only 212ºF. Silicone BF is not harmful if spilled on paint (excellent). Sherwood |
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10-04-2007, 02:05 AM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,309
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Quote:
Silicone can be removed from paint, but it's not easy. Paint guys HATE silicone. Water would not pool in the reservoir, so don't look there. There is tidal action between the reservoir and the MC. Also, as pad wear, fluid runs down into the system. The reservoir level falls. Water would pool elsewhere. Guess. I would change BF anyway. There aren't any fluids that don't get changed. Maybe refrigerant.
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
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10-04-2007, 07:48 AM
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