I bought my EZ Loader trailer with oil bath hubs in November of 2005. Never touched them until year before last. Didn't really need to then, but I bought some aluminum caps with a sight glass to replace the original all plastic ones. My annual maintenance consisted of looking at the cap to make sure the oil was clear and at the right level. Never had to change or add fluid. When I changed out the caps I filled the new ones with gear lube and put them in the freezer for a bit. Then I just screwed them on and was done. Absolutely trouble free for these 15 years. Now, trailer tires have been an issue, but not bearings, hubs or the axle.
![[Image: DSC-1584.jpg]](https://i.ibb.co/Hnj2W2N/DSC-1584.jpg)
Single main, no kicker. 