Just my opinion here, but doctoring up your gas really only serves to separate cash from your wallet.
What exactly are you expecting that tiny bit of oil in the gas to lube on an overhead valve 4-stroke engine?
On a 2-stroke engine it makes sense because the fuel has to go through the crankcase and past the bearings to get to the cylinder.
On an overhead valve 4-stroke, the only place this tiny bit of lube will touch is the protruding section of valve stem on the intake. A fraction of an inch. How much good do you really think that is doing?
The oil burns during combustion, so nothing gets to the exhaust valves.
If you think it's doing something for you, by all means continue, but like someone else said earlier, there is no science to back it up.
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Today's Featured Article - Tractor of the Month - by Staff. decals, dependin upon the configuration of the parent company International Harvester in the year of production. For the purpose of this article, we will refer to the tractor as simply a "Farmall Cub". This little tractor was aimed at the needs of the small-acreage farmer - farms of 40 crop acres or less and truck gardens, or for larger farms that needed an extra tractor. Seven or eight implements were initially designed for it: Plow, Disc, Backblade, Sickle-Bar
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