</font><font color="blue" class="small">( Wow, I thought bar oil was more like 90 weight. It sure pours slow and is much stringier than engine oil.
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Oil sold for saw chains has special addititives to help it stick to the bar, and specifically states "not for engine use."
The viscosity varies, with "SAE30" meant for summer use; in cold weather it's too thick to flow through the oiler, so in winter you change to "SAE20, or SAE10" depending on air temperature.
(Or cut it with diesel.)
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Oil sold for saw chains has special addititives to help it stick to the bar, and specifically states "not for engine use."
The viscosity varies, with "SAE30" meant for summer use; in cold weather it's too thick to flow through the oiler, so in winter you change to "SAE20, or SAE10" depending on air temperature.
(Or cut it with diesel.)