Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

Customers find the gear oil pump works well on lower units and outboard gearcases, with multiple included adapters that fit standard oil containers and outboard fill holes. They appreciate its ease of use, particularly for changing gear oil, and consider it worth the price, with one customer noting it's simple enough to throw away after use. Customers praise its cleanliness, being much less messy than alternative methods, and its effectiveness in pumping oil into the lower unit.