The condensate is dark, but looks worse than it is. Sounds like he's also got a massive creo problem as well, though.When it is cold enough, most caps grow icicles as this is the coldest part of the system and in cold, wet weather, it is not uncommon for the exhaust gases up there to condensate and freeze.
Swede, maybe you can get him over there to "help you clean the chimney." Seeing is believing. He sounds like a lost cause, though.One of the things I did was to clean my chimney when he was at the house on purpose, then show him the small amount of flaky creosote from the entire winter and ask him what he thought.
I had several back in the day, but they usually went out pretty quickly when I cut the air. I got pretty good at burning the creo out with just enough heat not to start it on fire, or just start a small fire in the chimney. I only brushed when the draft started slowing down from the burnt creo flake falling into the elbow, and smoke rolled out of the stove. Sometimes the stovepipe that I used for chimney rusted through, so that could have been a problem with a chimney fire. Miraculously, the clay liner is still intact. It never occurred to me to stack all the Red Oak I was burning for three years. Three months was more like it. Unlike a lot of people though, when I'm shown a better way, I don't fight it. My wife always wanted to stack earlier, but I always found a way to avoid it. Now that I've seen the light, thanks to this place, I'm years ahead and never looking back, except to thank God.He must be one of those people who think chimney fires are part of the wood burning experience.