Quote:
Originally Posted by johnlvs2run
Isn't it the other way around, easier to pump air through open lines, than pumping fluid back and forth through closed lines, and the only reason for looping is keeping any crude out.
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Assuming fluid is already pumped out, the looped lines, in theory, should be easier. If all you are doing is moving air, you are either pushing air on one side and sucking air on the other side, or you are transferring air from one side or the other. I don't know if one will be able to feel the difference, but given the primary objective of keeping the internals clean... why not?