Boat motors often carry different service intervals than an engine in a road-going vehicle. And that’s perhaps best exemplified by the role of an outboard’s gearcase, AKA it’s lower unit.
In a nutshell: Imagine your car’s transmission doing its job…at a sustained high RPM…while completely submerged in water.
So that said, you can probably understand why regularly inspecting and servicing your outboard motor’s gearcase oil is so dang important—which is precisely why the outboard authorities over at Quicksilver Products made this in-depth video.
Since it’s an offshoot of Mercury Marine, the experts at Quicksilver know a thing or two about servicing boat motors and, better still, they’ve got a line of marine-grade engine oil and gear lube to help you do it.
So if you’ve never changed your outboard motor’s gearcase oil—and you really should—this video explains how easy and straightforward the job is.
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