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Tecumseh 3.0 HP


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Experience for me has been that 50:1 or 64:1 (1 oz/half gallon) with good oil works well in the Tecumseh motor. Amsoil is good oil, and you will probably get away with 100:1 for a while but any sleeve bearings in the motor will eventually wear and become "egg shaped" at that low ratio. The mains will lose their seal and you will have crancase ventilation issues. A motor with roller mains and rod bearings will last much longer.

The good thing is that an auger motor will likely never see enough running time to have the bearings wear enough to cause issues, so run any ratio you want.

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Mine is a 2 HP and it also says 24:1 on the housing and the unit is about 10 years old. It seems to smoke a little too much when I rev it up and I have had minor issues with the spark plug/carb so I am thinking of going to the 40:1 ratio. In my youger days of dirt bike riding smoke told me the engine was getting enough lubrication. I wonder what Jiffy says about using 40:1 in the motor when it orginally called for 24:1 and unless you use some other brand, Jiffy doesn't offer the 24:1 anymore.

How about using the 91 octane gas in the oil??? Any difference in starting etc.???


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I use to run 40 to 1 regular 2 stroke oil and it wore out the engine.I replaced the power head and started using the amsoil at 75 to 1 and it still is running great 5 years later. I am a mechanic and a Amsoil dealer now....

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