overheating of the fluid due to frequent brake application

over-cooling of the brakes during high speed driving

keeping the vehicle without use for an extended period

an excessively high engine speed on a downhill road

brakes function more effectively

brakes fail completely

brake operation is delayed after depression of the brake pedal

vapour locking has no effect on brake performance

lubrication

power transmission

cooling

none of these

a high boiling point

low viscosity

compatibility with rubber and metal parts

all of these

DOT 4 fluid has a higher boiling point that DOT 3 fluid

DOT 4 fluid has a lower boiling point than DOT 3 fluid

DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life

DOT 4 fluid is more resistance to freezing than DOT 3 fluid