Groco Oil Change Systems feature positive displacement bronze gear pumps that deliver up to 3 GPM, include touchpad control and dry-run protection, and have a re-settable breaker for over-current protection. Use these 3 and 5 port high powered systems to pump cold oil or high viscosity fluids. Enclosure conceals pumps for clean engine room appearance and includes maintenance log.
I had an E-xchange-R brand on my boat. The rubber pump impeller frequently wore out and was a pain to replace. The gear pump is reliable and long lasting.