Re: DOT 5 brake fluid
[Re: dogdays]
#1603219
04/07/14 01:18 PM
04/07/14 01:18 PM
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Joined: Apr 2005
Posts: 15,134 Kelowna, B.C. Canada
DPelletier
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
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Yep, while it makes sense to drain and flush your system when going from glycol based fluid to silicon based fluid, having both will not cause catastrophic failure. I use Dot 5 on my restored 'Bee because I don't want paint damage. On all my other vehicles and motorcycles, I use Dot 4. Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: DOT 5 brake fluid
[Re: Andrewh]
#1603221
04/07/14 03:42 PM
04/07/14 03:42 PM
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Joined: Apr 2005
Posts: 15,134 Kelowna, B.C. Canada
DPelletier
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
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Quote:
it isn't that it won't function if you mix the two. it is you won't get the benefit of full silicone if you mix. in other words some of the left over dot 4 could still melt your paint.
I'm aware of that; I was confirming that nothing catastrophic would happen to your braking if some Dot 3 or 4 was left in the system.
In my case, EVERYTHING was new; calipers, wheel cylinders, hoses, lines, master, etc. so there was no existing Dot 3.
Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
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Re: DOT 5 brake fluid
[Re: John_Kunkel]
#1603224
04/07/14 06:10 PM
04/07/14 06:10 PM
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Joined: Apr 2011
Posts: 1,520 West Palm Beach, Florida
Copper Dart
pro stock
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pro stock
Joined: Apr 2011
Posts: 1,520
West Palm Beach, Florida
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as i understand it, and i may be wrong (again) dot 3 brake fluid is hydroscopic and can/does absorb H2o effectively diluting it throughout the entire brake hydraulic system. If H2o finds its way in (and it will) dot 3 can handle a considerable amount of moisture (relatively speaking) without it severely affecting its performance, and by diluting it, the corrosiveness is greatly reduced. Dot 5 on the other hand, isn't as friendly to H2o. Water can and does find its way in and accumulates in condensed ratios causing very focused corrosion of the brake system components. I know I've been bumped on the head many times and may be way off so check for yourselves, as for me, I will be using Dot 5 in my classics when possible, just don't rely on it lasting forever on cars that don't see much drive time regularly. "You get what you pay for"
Common sense, the least common of all the senses. Mom.
For fear of ridicule, society stifles creativity. Ricky Valdes
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Re: DOT 5 brake fluid
[Re: dogdays]
#1603228
04/07/14 07:56 PM
04/07/14 07:56 PM
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Joined: Apr 2011
Posts: 1,520 West Palm Beach, Florida
Copper Dart
pro stock
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pro stock
Joined: Apr 2011
Posts: 1,520
West Palm Beach, Florida
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VaporLocked Brakes? Never heard of that before. Ill consider it another lesson on how little i know.
Common sense, the least common of all the senses. Mom.
For fear of ridicule, society stifles creativity. Ricky Valdes
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Re: DOT 5 brake fluid
[Re: Magnum]
#1603230
04/11/14 06:56 PM
04/11/14 06:56 PM
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Joined: Feb 2004
Posts: 7,196 Harrisburg, Pa.
screamindriver
master
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master
Joined: Feb 2004
Posts: 7,196
Harrisburg, Pa.
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Quote:
Quote:
Dot 5 on the other hand, isn't as friendly to H2o. Water can and does find its way in and accumulates in condensed ratios causing very focused corrosion of the brake system components.
Both fluids can function perfectly, just bleed the system every 3-5 years.
If you chose a small interval, just bleed a few pumps at each corner. A thorough flush is not necessary.
And that's what I've found also...the moisture gets in past the caliper and wheel cylinder pistons... As stated a few pumps off each corner every year will keep the system fresh..You can definitely see the fluid color change at the working ends of the system..
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