Hey Bill, I had a 83 Venture that I bought new and rode for close to 90k miles. I noticed a coolant drip in the same place you did on your max. It was when it was cold weather also. There is a black o-ring in there that can be replaced. It stopped my leak.I change my coolant on average every 6 years. I use anything that I've got out in the garage at the time, or if I need to buy some, whatever is on sale. I make sure it's OK for aluminum engines. It comes out clean, the catch tank isn't cruddy inside, and the motor doesn't seem to be overheating. Very rarely, I get a small drip out of the thermostat housing in front of the engine near the starter, but so far, it's not enough to concern me. Seems to happen overnight after a hard run the evening before. I'm thinking the housing loses its seal as it's cooling down. Never leaks or drips when hot. I seem to remember that the top of the housing is plastic. Maybe that's the cause of the leak? I also think I read that there is an aluminum top to replace the plastic one. Anyone know about this?
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