@rgood I just saw this. You nailed it! I pulled the bowl off in January this year, it was full of oil, but I took it into the shop, dumped the oil and a big ball of ice was in the bottom. Topped off the engine oil, fired up the tractor )without the oil bowl), and the oil stopped coming out of the exhaust fairly quickly. It smoked for a few until the oil was burned out of the muffler, and cleared up in no time. I filled and reinstalled the bowl, from then on, when I was done with the tractor, every time, I covered the air intake with a bucket. Haven't had in issue in the last 4 months. I jumped on here to post what I found, only to find you beat me to it. Thanks man!