ORIGINAL: jack1933
hello bass thanks for your input to all this oil stuff. have had several boats over the last 42 years, all mercury pwered, all used quicksilver. never a problem with any of the engines, from 35 to 135 hp. the nice thing about the oil is no pickling necessary, when storing over long time. this is just 1 additive carl came up with for his oil. when i became interested in giant scale in 1980, i just naturally used the merc oil. never had a spark plug foul in the outboards or the model engines. i have no link or anything else of a technical nature to support this oil, only 25 years of using it in both engines, with no problems of any kind. now if this is not a solid recomendation for a product, i dont know what is. regards jack
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The problem is, outboard engines (motors are electric/rocket/rubber band) are liquid cooled. Our model airplane engines are air cooled. The lubrication requirements for the two types of engines are different. What works well in an outboard may not adequately protect an air cooled model aircraft engine.
Not all air cooled engines are the same. Lawnboy mowers are massively heat sinked when compared to most utility engines used by we modelers. Therefore, the Lawnboy Ashless oil is closer to an outboard motor oil (larger molecules) than oil intended for much hotter running utility engines.
Just my two cents. <G>