Re: Anyone use these or have seen these trailer hubs?
RangerTrail has used oil bath hubs for quite some time. Seems to be working just fine. However Triton used oil bath hubs, for a while, too. Most either leaked through the rear seal and front cap. The all plastic cap would crack & leak, all by itself, during winter storage in colder climates.
Warranty claim solutions started with sending dealers new caps & "upgraded" seals. Ultimately, new grease hub & bearing sets, were sent to dealers/customers as the warranty fix. Heavier aluminum caps, with a smaller site glass, was also available for those that couldn't live without the oil bath. But if it leaked again, the ball was now in your court.