Bob and Dave, my truck has a factory 450W frost plug heater and it just barely does the job at minus 30C. I HAVE started it at minus 39C after 8 hrs of preheat, but it was a real struggle, using a second booster battery too. If you haven't experienced these kinds of temperatures you just can't imagine it. I will probably install a much larger coolant heater (or a second) one day. I have talked to the Philips and Temro folks: their catalog suggests a screw-in 400W heater that fits into a fitting MY tractor doesn't have! Dipstick heaters were banned here some time ago because they can only keep warm oil warm. That's not much use, so people plug them in to warm cold oil which cannot circulate as it warms. so it carbonizes on the heater instead. There were too many engine fires as a result. I don't worry about what the law says, and COULD order one, but I'm told the fire danger is real and they just cannot warm really cold oil.
I did just install twin 50W oil-pan heaters the other day, but 100 watts is not enough. The oil pan is a two-sump sort of design, made to fit around the drive shaft, so only very small peel-and-stick pads can be attached. Kubota didn't make it easy!
I should say we are moving to an off-grid solar house later this year. I need enough watts to get that engine warmed up FAST, say in two hours or so, because my generator is going to be supplying the power. Overnight is out of the question. Yes, I will be eventually building a nice warm shop/garage, but that's in the future. Paul
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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