DWRAT,
Flushing brake and clutch fluids is not a particularly difficult task, but if you've never done it before, I think the advice given here by others to take it to a good mechanic would be money well spent. You could watch how it's done and decide if you want to tackle that job the next time it needs it.
Quote:
Originally Posted by Dwight
Using DOT 5 in a DOT 3 or DOT 4 system without proper flushing will cause damage to the seals and cause brake failure.[citation needed] DOT 5 brake fluid is not compatible with anti-lock brake systems. DOT 5 brake fluid absorbs a small amount of air requiring care when bleeding the system of air.[citation needed]
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I would be very cautious about using DOT 5 fluid in a system designed for DOT 3 or 4. As the quote posted by Dwight above states, the systems need to be THOROUGHLY flushed of all previous fluids and even then, if the seals, o-rings, etc. were not designed for DOT 5, you may really screw up your brake and clutch hydraulics.
Just my two cents.
Ted