Re: DOT 5 brake fluid
[Re: TJP]
#1603204
04/05/14 12:49 AM
04/05/14 12:49 AM
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Joined: Apr 2005
Posts: 4,909 new berlin wisconsin
Mr T2U
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Posts: 4,909
new berlin wisconsin
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if the dot 5 fluid is in a black bottle. remove the cap and foil seal, lightly re install the cap to let the air out. let it sit out in the sun for a few hours to force out the air bubbles that develop during shipping.
if in a light colored bottle. put it in a pan of hot water, about 200*, for about 15 min.
perception is 90% of reality
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Re: DOT 5 brake fluid
[Re: 70satelliteguy]
#1603210
04/05/14 05:17 PM
04/05/14 05:17 PM
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Joined: Apr 2012
Posts: 18,880 -
RSNOMO
Moparts Torchbearer
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Posts: 18,880
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Quote:
What is the big advantage of 05 over 03
First and foremost, paint friendly...
Does not absorb moisture...
Higher boiling point...
Research its development...
I've had Dot 5 in a '71 B-body for over 20 years...
I would never go back to DOT 3...
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Re: DOT 5 brake fluid
[Re: TJP]
#1603212
04/05/14 05:35 PM
04/05/14 05:35 PM
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Joined: Mar 2006
Posts: 9,784 MI, usa
dvw
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Quote:
I would not advise mixing,
http://www.gabma.us/docs/dot5.pdf
I wouldn't mix it either. But if you drain , fill and bleed, I've never had an issue. You can tell by the color when all the old fluid has been bled out. Any minuscule fluid remaining has never caused a problem for me. Doug
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Re: DOT 5 brake fluid
[Re: dvw]
#1603213
04/07/14 12:04 AM
04/07/14 12:04 AM
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Joined: Jan 2003
Posts: 5,788 Hamilton, Ontario Canada
Magnum
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Hamilton, Ontario Canada
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Quote:
Quote:
I would not advise mixing,
http://www.gabma.us/docs/dot5.pdf
I wouldn't mix it either. But if you drain , fill and bleed, I've never had an issue. You can tell by the color when all the old fluid has been bled out. Any minuscule fluid remaining has never caused a problem for me. Doug
I agree, a thorough cleaning is not necessary. If it's of any concern to you. Bleed the system every couple years, at least a few pumps out the bottom.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: DOT 5 brake fluid
[Re: Magnum]
#1603214
04/07/14 10:00 AM
04/07/14 10:00 AM
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Joined: Jan 2003
Posts: 5,888 Athens, Greece
Pyper70
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Athens, Greece
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Not to hijack but I am redoing the braking system on a 72 RR...Power Disc/Drum. I am replacing the brake lines front to rear. Going to rebuild the calipers and the wheel cylinders. The car is currently DOT3. Would you say to go to DOT4 or DOT5? What do I have to do to the Master besides Bench bleeding it? Do I need to clean it out with something?>
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: DOT 5 brake fluid
[Re: Mr.Yuck]
#1603216
04/07/14 10:39 AM
04/07/14 10:39 AM
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Joined: Apr 2005
Posts: 4,909 new berlin wisconsin
Mr T2U
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Joined: Apr 2005
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new berlin wisconsin
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what kunkel said is correct. federal LAW says DOT 5 brake fluid MUST be to coexist with other brake fluids without causing harm. if it wasn't it wouldn't be able to be sold in the US.
i don't have time to look this up and post it. it has been posted several times in the past. do a goggle search on moparts to find lots of info on this subject.
Last edited by Mr T2U; 04/07/14 10:49 AM.
perception is 90% of reality
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Re: DOT 5 brake fluid
[Re: Mr T2U]
#1603217
04/07/14 11:09 AM
04/07/14 11:09 AM
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Joined: Jan 2008
Posts: 1,202 Minn
SportF
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Minn
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Quote:
what kunkel said is correct. federal LAW says DOT 5 brake fluid MUST be to coexist with other brake fluids without causing harm. if it wasn't it wouldn't be able to be sold in the US.
i don't have time to look this up and post it. it has been posted several times in the past. do a goggle search on moparts to find lots of info on this subject.
This subject comes up all time on boards all over the place. Mr. Kunkle is correct. I am amazed that someone would think you could sell a simple product, that if used wrong, could cause a failure and kill...thousands... world wide. Wikipedia says mixing will cause failure....I don't believe it, the legal implications of that are mind boggling.
As I understand it, it was developed by either (or both) the Military or Post office as they felt the DOT 3 stuff wasn't the best for their equipment, which sits around a lot not being used. Its good stuff, use it.
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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
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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
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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
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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
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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: 7,194 Harrisburg, Pa.
screamindriver
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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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