By the time I got to the passenger front, I snapped off the bleeder valve:mad:. Then I thought "I can get that out".
You want what's known as break-free CLP. I know its not the most commonly referenced penetrant (like liquid wrench, or PB catalyst) but break-free is awesome.
I was working under the 1955 GMC pickup trying to get the brake lines out of the mastercylinder. Started with the snap on line wrench, started rounding the fitting off despite using a 50$ wrench. So I cut the line off it, and used a socket, rounded it all the way. Then moved to the vicegrip, rounded it down with a vicegrip, which gave it an interesting texture. So I pulled the mastercylinder off the frame since the lines were cut anyway, put it in the vice, drilled it to use an easy out, broke the top off, finally sprayed it with breakfree, let it sit fifteen minutes, then redrilled and easy outed and it came right off.
P.S. The parking brake was a PITA.
ya they can be, someone had used the one in mine as an "E-brake" or a "ralley brake" which they clearly aren't. Those 1/2 twist pins that key into the metal behind had pulled out and enlarged the holes, so I had to bend the sheet metal back into place and reinforce it to hold the pins in place.
