Guys -Working on my dad's Jubilee by remote control again (he's 4 hours north of here). Dad reports: Engine has been smoking gray smoke for the last year or to. Not blue like oil, nor does it smell like oil. Not black like a rich carburator setting, just gray. Engine coolant system is tight. Uses a quart of oil thru the summer (10w-30). Sent him my compression tester and the results are, front cylinder to back, dry: 94, 96, 95, 94 lbs, wet: 100, 102, 100, 104. From what I've read, thats pretty decent. Oil pressure is 60-70 lbs at high throttle. Tractor is mostly a toy, running a half mile to the neighbors, and dragging the grand kids around the woods in a trailer is most of its retirement these days. Doesn't see much heavy work anymore. Probaly sees 20-40 hours per year on it. He's owned it for about 20 years. Have heard from some that old tractors need to be worked hard once in a while to keep them limber. Any truth to this? Carburator is set fine. Gas is fresh. Is there a thermostat in this tractor? Have never seen the coolant temperature gauge much above "cold" in nearly for ever. Any words of wisdom here as to why it is smoking?
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