| [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #197897] |
Fri, 08 February 2013 21:23  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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G'day,
At the very bottom of this message you will find my email to the DOT.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
________________________________________
From: US Department of Transportation Reference Service [mailto:ntl1@mailwc.custhelp.com]
Sent: Saturday, 9 February 2013 1:53 PM
To: robmueller@iinet.net.au
Subject: DOT 5.1 Brake Fluid [Incident: 130208-000050]
Dear DOT Customer,
Thank you for contacting the US Department of Transportation Reference Service. This initial response is to acknowledge that we
received your question. Your question reference number is listed below. We strive to answer each question we receive by referring
you to the appropriate web-page, publication or subject-matter expert. We try to respond to all questions within 4 business days.
Sincerely,
Reference Services
National Transportation Library
Bureau of Transportation Statistics
Research and Innovative Technology Administration
U. S. Department of Transportation
Question Reference #130208-000050
Summary of Answers:
DOT 5.1 Brake Fluid
Date Created:
02/08/2013 09:53 PM
Last Updated:
02/08/2013 09:53 PM
Status:
Unresolved
Discussion Thread
Auto-Response
02/08/2013 09:53 PM
The following answers might help you immediately. (Answers open in a separate window.)
Title: Toyota Recall Comments
Link: https://ntl.custhelp.com/app/answers/detail/a_id/511
Title: Interstate Highway Design Standards
Link: https://ntl.custhelp.com/app/answers/detail/a_id/257
Title: Federal Aviation Regulations (FAR) Preambles
Link: https://ntl.custhelp.com/app/answers/detail/a_id/366
Title: One Mile of Straight Road Every 5 Miles on Interstate Highways (Myth)
Link: https://ntl.custhelp.com/app/answers/detail/a_id/303
Title: Information about the Research and Innovative Technology Administration (RITA)
Link: https://ntl.custhelp.com/app/answers/detail/a_id/343
Customer By Web Form
02/08/2013 09:53 PM
Dear Sirs, I searched the FAQ before sending in this question. Brake fluid is designated as DOT 3, DOT 4, DOT 5; and DOT 5.1. As I
understand it DOT 3, DOT 4; and DOT 5.1 are glycol-based and compatible with each other. DOT 5 is silicone based and NOT compatible
with DOT 3, DOT 4; or DOT 5.1. Please advise why the designation of DOT 5.1 was created for brake fluid when it is incompatible with
DOT 5 brake fluid? I believe this causes confusion and could easily result in incompatible brake fluids being mixed with disastrous
results. I would think that the DOT would not want to create confusion and that DOT 6 would have been a better name for DOT 5.1.
Regards, Rob Mueller
[---001:001888:54104---]
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #197907 is a reply to message #197897] |
Fri, 08 February 2013 21:50  |
John Sharpe
Messages: 489
Registered: February 2006
Location: Texas
Karma: 1
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Senior Member |
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| Quote: |
... Brake fluid is designated as DOT 3, DOT 4, DOT 5; and DOT 5.1. As I understand it DOT 3, DOT 4; and DOT 5.1 are glycol-based and compatible with each other. DOT 5 is silicone based and NOT compatible with DOT 3, DOT 4; or DOT 5.1. Please advise why the designation of DOT 5.1 was created for brake fluid when it is incompatible with DOT 5 brake fluid? I believe this causes confusion and could easily result in incompatible brake fluids being mixed with disastrous results. I would think that the DOT would not want to create confusion and that DOT 6 would have been a better name for DOT 5.1......
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Who ever came up with the links, must either be an idiot or road a short bus.
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
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| Re: [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #197927 is a reply to message #197897] |
Sat, 09 February 2013 07:19 |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
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Senior Member |
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I've gotten similar letters from the government before. It seems they try to send out a letter to tell you they received your inquiry. Then they try to answer by giving you links to already published information. Then if really pushed, someone maya actually look and think about your question. Shows why politicians get so good at answering questions without actually saying anything!
Actually, thinking about your question, I think it's a very valid point you've made. Kind of like the oil standards, they now have made things so complicated that even an educated consumer can't be sure of purchasing the required product without a scorecard.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #197949 is a reply to message #197900] |
Sat, 09 February 2013 12:22 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| Ken Henderson wrote on Fri, 08 February 2013 21:30 |
In other words, "You ain't gittin' nuthin' more outa us!"
Ken H.
________________________________________
> From: US Department of Transportation Reference Service [mailto:
> ntl1@mailwc.custhelp.com]
> ... We strive to answer each question we receive by referring
> you to the appropriate web-page, publication or subject-matter expert...
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His obvious answer will be:
"We are the gov'ment. We know better than you what is good for you and we will do it however we want. It is not necessary for it to make sense to you."
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #197959 is a reply to message #197927] |
Sat, 09 February 2013 16:01 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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George,
I got the impression that they send you the links as a pacifier until they address the question you've sent in; we'll see!
Regards,
Rob M.
-----Original Message-----
From: George Rudawsky
I've gotten similar letters from the government before. It seems they try to send out a letter to tell you they received your
inquiry. Then they try to answer by giving you links to already published information. Then if really pushed, someone maya
actually look and think about your question. Shows why politicians get so good at answering questions without actually saying
anything!
Actually, thinking about your question, I think it's a very valid point you've made. Kind of like the oil standards, they now have
made things so complicated that even an educated consumer can't be sure of purchasing the required product without a scorecard.
--
George
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GMCnet mailing list
Unsubscribe or Change List Options:
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] FW: DOT 5.1 Brake Fluid [Incident: 130208-000050] [message #198038 is a reply to message #197959] |
Sun, 10 February 2013 14:19 |
rickmike
Messages: 252
Registered: September 2011
Location: United States
Karma: 0
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Senior Member |
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I seem to recall that the DOT number is related to the boiling point.
The silicone DOT5 was the first to be in that boiling range.
It was years later that a glycol based in that boiling range was offered for sale so it is designated DOT 5.1
Rick M.
1974 26' Canyonlands
aka "The General"
Clinton, TN
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