A oil pump has very little draw until it gets oil in it to seal it up.. in your case you started with 2 lines and
at least one line went high.. oil or any liquid will always take the path of least resistance.. keep a
small trap point and dont make the pump work hard.. your pump may be screwed by now
I'm thinking that the oil filter is draining out over the 3 days.
A $40.00 check valve might be the answer.
Going to leave the top line without a check valve.
If this doesnt work, I ordered 2 -12an threaded caps and will try just 1 line to see if the problem goes away.
