Last fall I ran Cascade for 3 days, then pure white vinegar for 30 days, and this worked great to clean out the grease and most of the rust. I then installed a nylon drier sock to filter any more junk from going into the top tank. What I didn't realize was, as I was pushing the lock ring with nylon around it through the rubber hose, I was tearing the nylon so only a few threads were holding it in place. Everything was going great until the nylon finally tore loose and blocked off some tubes. This caused the coolant to fill up the top tank until it went out the overflow and the engine overheated.
I removed the radiator and back flushed it but no nylon came out. Today I borrowed a small inspection camera and was able to find it and pull it out with a bent wire. I'll have some pictures and more information later, but I should be good to go now.
