Last article. I now know more about brake fluid than I really ever wanted. Read this all the way through and you can too.
http://www.mossmotors.com/SiteGraphics/Pages/Brake_Fluid/brake_fluid_long.html DOT 3,3/4, & 4 brake fluid is glycol based. Adding borates raises the boiling point for DOT4. Being that all of the above mentioned brake fluids are glycol based, they are all also synthetic. I have drawn the conclusion, possibly errant, that DOT 3/4 fluid is actually DOT 4, just labeled as 3/4 to imply that it is reverse compatible with systems that are said to require DOT3 fluid. Toyota has complained about using Dot4 fluid in some of their autos and lists only dot3 as specified for use. I will not be referencing any article on this as no one here probably cares. BTW, Citroën and RR use something entirely different. A very informative article, all in all. Rick Knoble Sent from My Samsung tablet -------- Original message -------- From Dieselhead <126die...@gmail.com> Date: 01/03/2014 9:21 PM (GMT-06:00) To Mercedes Discussion List <mercedes@okiebenz.com> Subject Re: [MBZ] DOT4 Brake Fluid >3/4 and 4 is the same thing. it's all "straight" 4 with no evidence. What we know is the 4 is different from 3, and that the 3/4 is called synthetic, but there is no evidence proving compatibility with older MB brake rubber parts. Nobody is telling that the "synthetic" is made from. It is essentially some bug juice that has a higher boiling point than the old DOT3 junk, and that boiling point happens to be at least as high as DOT4. But boiling point alone does not prevent it from eating the rubber parts. It may well be compatible, but there is no evidence to demonstrate that. _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
