Re: Dot 3 vs Dot 5 Brake Fluid
[Re: Morty426]
#1070495
09/07/11 12:35 PM
09/07/11 12:35 PM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Ive used DOT5 on all my own and all customers vehicles and never had a single issue. Some say its not safe to use, I dunno. All i'll say is one single mishap with the DOT 3 and the paint will be destroyed..If that's not enough to scare anyone, then  You could bathe the car in DOT 5 and there will be no issues. MB
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Re: Dot 3 vs Dot 5 Brake Fluid
[Re: HPMike]
#1070496
09/07/11 01:16 PM
09/07/11 01:16 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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My paint job cost......well, more than I care to admit, so using DOT 5 is a no-brainer. Also FWIW, despite the urban myth, your brakes will still work and your car will not explode spontaneously if you mix a little DOT 3, 4 or 5.1 in.   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 3 vs Dot 5 Brake Fluid
[Re: DPelletier]
#1070497
09/07/11 01:20 PM
09/07/11 01:20 PM
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Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
OzHemi
Penguin-hating Ginger
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Penguin-hating Ginger
Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
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Quote:
Also FWIW, despite the urban myth, your brakes will still work and your car will not explode spontaneously if you mix a little DOT 3, 4 or 5.1 in.
Dave
This guy was just topping off his car with some Dot 3, despite having had Dot 5 in it previously... 
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Re: Dot 3 vs Dot 5 Brake Fluid
[Re: Morty426]
#1070499
09/07/11 01:55 PM
09/07/11 01:55 PM
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Joined: Jan 2003
Posts: 5,138
East Aurora (Buffalo) NY
RoadRunner
master
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master
Joined: Jan 2003
Posts: 5,138
East Aurora (Buffalo) NY
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Yep, DOT5 in my car. I had done a road ralley last year and was onthe brakes pretty hard. Non-power discs. I had no issues. I had all new components. One trick someone told me about was to place the open can in a pan of boiling water. It could be a romur, but DOT5 will entrain air a little easier. So by heating it up, you are expanding the bubbles enough to rise to the surface. I did it, I figured it couldn't hurt.
68 Road Runner (383/4speed, post car w/decor pkg) - Major Project
69 Road Runner w/472 Hemi & 4 speed.
70 Challenger R/T SE EF8 w/ V9J, U - A32 - Major Project
2023 Ford Mach 1
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Re: Dot 3 vs Dot 5 Brake Fluid
[Re: mikemee1331]
#1070503
09/07/11 03:24 PM
09/07/11 03:24 PM
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Joined: Nov 2007
Posts: 5,337
the house on the left.
cogen80
master
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master
Joined: Nov 2007
Posts: 5,337
the house on the left.
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Quote:
dot 3 and 4 both produce water and eventually will rust out your lines/parts. dot 5 is silicone based and won't do that. if you use 5, you can ONLY use 5.
produce water? they absorb moisture which can rust your entire system. the dot5 doesn't absorb moisture but i have read that since it doesn't absorb moisture that the moisture can collect at the wheel cyl and calipers. just bleed the system once a year and you should be fine.
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Re: Dot 3 vs Dot 5 Brake Fluid
[Re: cogen80]
#1070504
09/07/11 05:35 PM
09/07/11 05:35 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:
Quote:
dot 3 and 4 both produce water and eventually will rust out your lines/parts. dot 5 is silicone based and won't do that. if you use 5, you can ONLY use 5.
produce water? they absorb moisture which can rust your entire system. the dot5 doesn't absorb moisture but i have read that since it doesn't absorb moisture that the moisture can collect at the wheel cyl and calipers. just bleed the system once a year and you should be fine.
the correct term is "Hygroscopic" which means that a substance readily absorbs moisture. Dot 4 (and the other polyethylene glycol based fluids) is hygroscopic and will absorb water from the atmosphere.....which is why you aren't supposed to use old fluid, particularly if it has had the lid off for some time. Moisture absorbed by polyethelene glycol brake fluid will rust all interior components of the brake system over time.
Dot 5 (not 5.1) is silicone based and will not absorb moisture. Since Dot 5 won't absorb the moisture, there is no danger of rust from water in the brake fluid, BUT any moisture in the system will tend to migrate to a dead end or high spot and rust in that area would then be free to form. Frequent use, bleeding or the use of stainless steel brake lines and components are methods of combating this corrosion.
There, clear as mud?
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 3 vs Dot 5 Brake Fluid
[Re: DPelletier]
#1070506
09/07/11 05:39 PM
09/07/11 05:39 PM
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Joined: Nov 2007
Posts: 5,337
the house on the left.
cogen80
master
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master
Joined: Nov 2007
Posts: 5,337
the house on the left.
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Quote:
Quote:
Quote:
dot 3 and 4 both produce water and eventually will rust out your lines/parts. dot 5 is silicone based and won't do that. if you use 5, you can ONLY use 5.
produce water? they absorb moisture which can rust your entire system. the dot5 doesn't absorb moisture but i have read that since it doesn't absorb moisture that the moisture can collect at the wheel cyl and calipers. just bleed the system once a year and you should be fine.
the correct term is "Hygroscopic" which means that a substance readily absorbs moisture. Dot 4 (and the other polyethylene glycol based fluids) is hygroscopic and will absorb water from the atmosphere.....which is why you aren't supposed to use old fluid, particularly if it has had the lid off for some time. Moisture absorbed by polyethelene glycol brake fluid will rust all interior components of the brake system over time.
Dot 5 (not 5.1) is silicone based and will not absorb moisture. Since Dot 5 won't absorb the moisture, there is no danger of rust from water in the brake fluid, BUT any moisture in the system will tend to migrate to a dead end or high spot and rust in that area would then be free to form. Frequent use, bleeding or the use of stainless steel brake lines and components are methods of combating this corrosion.
There, clear as mud?
Dave
so basically what i said but not needing a Thesaurus.. lmao
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Re: Dot 3 vs Dot 5 Brake Fluid
[Re: DPelletier]
#1070508
09/07/11 07:36 PM
09/07/11 07:36 PM
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Joined: Nov 2007
Posts: 5,337
the house on the left.
cogen80
master
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master
Joined: Nov 2007
Posts: 5,337
the house on the left.
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Quote:
Quote:
so basically what i said but not needing a Thesaurus.. lmao
Sure, but mine sounds much more authoritative, does it not?
Dave
yea it does..lol
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