Talk:Brake fluid

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The article makes no sense, why would the USDoT be the body that standarised brake fluid world wide? Its not reference or explained which leads me to believe its not true.(Morcus (talk) 13:30, 1 October 2008 (UTC))

>>> the US DOT standards have widely been adopted worldwide because the USA was the first country with lots of cars. They already had standards in place and other countries followed. Anywhere you go in the world, automobiles use DOT brake fluid.

The Service and Maintenance section states "As a general rule, brake fluids with different DOT ratings should not be mixed, although all DOT fluid is compatible, (this is part of the DOT specification)." I do not see where all DOT fluid is compatible in the DOT spec (reference found on the DOT 5 wiki page). The DOT 5 wiki page referenced in this article states "Using DOT 5 in a DOT 3 or DOT 4 system without proper flushing will cause damage to the seals and cause brake failure." If the information in this article is innaccurate, it could be quite dangerous. Terryjft (talk) 02:02, 8 December 2009 (UTC)


>> If you had read the entire article you'd see that you've misunderstood that. DOT 5 is NOT compatible with other fluids. Dot 3, 4, and 5.1 fluids can mix without an issue. Since the dry boiling point on DOT 3 is higher than the wet boiling point on dot 5.1, you could theoretically use DOT 3 fluid temporarily on a DOT 5.1 spec system without a problem. They're all glycol based and have no issues mixing. I can't link you to the stuff but I've been a mechanic for 20 years.


>> The "Service and maintenance" section needs to be rewritten or removed. It appears to have been written by someone with limited experience and the content isn't relevant to the article.