I bought one of these
http://www2.northerntool.com/product-1/16817.htm

"self priming" pumps from northern and it really doesn't work all that well when I tested it with water. This is the last big item I need to start making bio.
What pumps do you folks use to collect oil?

 

Can't get the link to work. You talking about the little pony pump with the rubber impeller? Doesn't look very fuel friendly.

 

I don't know why that link failed. Here is a eHay item number for the same pump 8014653530

Heck of a mark up on it too. Anyways yeah rubber impeller. I choose this one because it says it self priming but it won't even start lift water 1 inch. It does pump ok after I prime it my self.

I would really like a 12 volt pump that has some serious gpm. That won't cost a arm and a leg.