8secDuster
03-18-2026, 07:18 AM
I had the front Wilwood Master Cylinder start leaking a couple of week ago after only 2 miles of Go Carting. :mad:
So I bought a rebuild kit from Wilwood and rebuilt it. After bleeding the fronts, I thought I would just check the rears for any trapped air while everything was apart.
Both rears were fine, no air in the system, but, the right rear fluid came out Blue-ish Green? Fluid out of both fronts calipers and the left rear caliper were the normal fluids yellow-ish color.
Only the fluid out of the right rear caliper had changed colors.
I'm using Wilwood's EXP-600 fluid. The whole system bled normal, with no fluid decolorization out of any of the calipers the first time we bled everything at the end of last year.
The car rolls fine, rear wheels spin freely off of the ground, so don't think the caliper is hanging up, and it didn't do anything weird the 2 times I have driven it around the neighborhood. (2nd gear - 20mph tops)
I bled it several more times to flush out all of the blue colored fluid.
Again, This is a fresh build received January of 25, and has 2 neighborhood miles on it so far. The Wildwood's came from FFR.
Has anyone else experienced or seen this before?
226936
226937
So I bought a rebuild kit from Wilwood and rebuilt it. After bleeding the fronts, I thought I would just check the rears for any trapped air while everything was apart.
Both rears were fine, no air in the system, but, the right rear fluid came out Blue-ish Green? Fluid out of both fronts calipers and the left rear caliper were the normal fluids yellow-ish color.
Only the fluid out of the right rear caliper had changed colors.
I'm using Wilwood's EXP-600 fluid. The whole system bled normal, with no fluid decolorization out of any of the calipers the first time we bled everything at the end of last year.
The car rolls fine, rear wheels spin freely off of the ground, so don't think the caliper is hanging up, and it didn't do anything weird the 2 times I have driven it around the neighborhood. (2nd gear - 20mph tops)
I bled it several more times to flush out all of the blue colored fluid.
Again, This is a fresh build received January of 25, and has 2 neighborhood miles on it so far. The Wildwood's came from FFR.
Has anyone else experienced or seen this before?
226936
226937