Quote:

If we assume that the brake fluid is incompressible and the lines don't expand with pressure, then the volume you shove into one end of a filled line is the same volume that will come out at the other end, no matter what the size.

I don't believe I've ever seen 1/4" line on brakes.

The above assumptions are not 100% correct but they are close enough to work.

R.



All hoses will expand "some" maybe not "much". But the larger they are the more they expand. I'd use no3 and keep hoses as short as possible.