Originally posted by e30dood
You can use DOT 5 as long as you fully flush the system of DOT 3 or DOT 4 brake fluid. In order to do that, you have to fill your system with DOT 5 fluid, flush it and fill it again. Warning, do NOT mix DOT 5 with any other fluid.
That's why I said "technically".
I think the drawbacks far outweigh any benefits you might get from using DOT 5. But that's just my opinion.