Adding oil to an Onan generator at the end of an oil change can be excruciatingly slow. The process involves adding an ounce at a time with a frustrating pause in between. Holding the bottle is awkward due to poor access, and pouring the oil in directly from the bottle leads to small spills. I solved the problem by using a gear lube pump, which I normally use to add oil to the lower unit of my boat’s outboard motor. I bought it at Walmart for about $5. Place one end in the oil bottle, and the other in the oil port on the generator. Then slowly work the plunger to add oil in the recommended amounts. Note: Some oil bottles have different size caps and won’t accept the screw-on cap of the gear lube pump.
Ken Dwiggins | Reno, Nevada