I have used Wipe-out/Patch-out and accelerator and thought they worked well. Then I bought a bore scope. Hard carbon was present in my bores, it took 7+ days with Carb-out soaking and lots of scrubbing with nylon brushes. I bought the Thorro-clean and was able to clean the carbon out, even the "carbon ring" in 20 min of total work time by following instruction.
Any comments on Thorro-clean products?
Any comments on Thorro-clean products?











