Since the bolt is stuck tight, you might need to replace the caliper assy because after removing the bolt, there might be excessive wear resulting in too much clearance and this might cause rattling when going over slight bumps. I believe a used caliper from the scrap yard won't cost you much but availability might be a problem.
I use Wurth, ROST OFF and find that it is a good product. Spray and let it soak for at least 30 mins. Flip the caliper up and down to work it loose. If the caliper works itself loose from the slider bolt, it would be difficult to get any leverage. The slider bolt has a small hex area which you can try getting a open end spanner to get the leverage for twisting.
HAPPY NEW YEAR.
Wednesday, December 31st, 2008 AT 5:49 AM