I've been seeing a lot of ppl saying the stuff is some dangerous/nasty crap!
But when I took a look at the Material Safety Data Sheet on it, it only said a mild eye irritant and if ingested, may cause slight upset stomach. Did I miss something?
I'm a bit flummoxed too. I've had that crap on my hands and the bike quite often. I've never so much as had even reddening of the skin where its touched me, and the bike has suffered nil. Other will chime in I'm sure though.
Set a can of DOT 3, DOT 4, DOT 5.1 and Mineral Oil side by side, they all have the same warnings and cautions on the container. The only really "nasty" traits that DOT fluids have is their ability to strip a painted surface if not cleaned off. And then only if left for a period of time. If cleaned off promptly, it usually won't harm a painted finish. And the marketing BS that mineral oil brake fluids are more "environmentally friendly" is just that, BS. The only thing that makes mineral oil greener is it is non-petrol based, and made from "renewable" sources. The additives required to increase the boiling point of mineral oil brake fluids to usable levels isn't any safer for the environment than DOT fluids, and it's only slightly less toxic.
Like gmcttr said, It's just something that gets repeated often enough to become believed as fact.
What it boils down to is you have to use an appropriate amount of caution with them, as with any chemical compound, whether petrol based or not. I'm a mechanic and work with DOT and mineral oil fluids pretty regularly. I do wear gloves when working with both. DOT fluid does irritate my skin a bit. And both types are easily absorbed through the skin as are many oils, cleaners, etc. And most of the chemicals found in these types of things really aren't "good" for you. So minimizing skin exposure is simply smart. But DOT 5.1 isn't nearly as "nasty" as it's hyped to be.
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