Stop in for a cup of coffee

I have the pump that attaches to the top of the bottle, but it gets old as it doesn't move a ton of the thick oil.
I have seen guys put a tube into bottom of bottle, sealed at the cap and punch a hole for a blow gun. I can only imagine the mess i would make.
I have a 5 gallon pail and a gear oil pump. I usually buy a gallon at a time.