>From another group:-
>>> DOT 3, 4 and 5.1 are all glycol-based fluids and can
>>> be mixed successfully.
>>> DOT 5 is silicon-based and is not compatible with
>>> any other type of fluid. DOT 5 must not be mixed
>>> with any other type of fluid!!!
>>> There is often confusion about this because people
>>> sometimes think DOT 5 and DOT 5.1 are the same
>>> thing, but in reality they are not. It's simply an
>>> unfortunate numbering system that should have been
>>> done differently to avoid this confusion. <<<
Aware of this DOT 5 / DOT 5.1 situation from quite
some time ago, I decided a survey was needed & asked
in a number of Autoparts shops around here, when I was
buying other stuff, whether the two could be mixed
safely.
Without exception I was told there was no problem!
Now I'm aware that one should not mix them, but from
this survey, I'd guess that there are a lot of vehicles
around with a mixture of DOT 5 / DOT 5.1 fluids.
Now a survey is one thing, but I'm not going to do the
experiment <G> So does anyone know what the actual
effects are on the braking system of such a mixture?
Clive
Oxford UK
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