Any of the oils used to lube up power tools should work. SAE 20 I believe. I found a small bottle with the WD-40 cans at my local Lowes in the power tool section.
Been a long time since I had an external pump that required oil, but if I recall correctly the directions said to use 3 and 1 oil. Any hardware store will have it.
I found an old post on here with the same question and they recomended 3 & 1 oil also. So I went and picked some of that up today. Thanks for the help.
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