What is hypoid gear oil?
04-16-2002, 11:56 PM
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What is hypoid gear oil?
I'm going to be changing the differential oil this weekend and ust wondering what the significance of hypoid gear oil is. I read many threads regarding the differential oil change but don't recall the explanation of hypoid. Only reason I ask is because I'm planing on using Mobil 1 synthetic gear oil which does not state that it is a hypoid type. I'm just trying to follow Honda's fluid requirements whcih calls for hypoid GL5 or GL6.
04-17-2002, 12:29 AM
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Hypoid? Doesn't that refer to the cut of the gear's teeth? I think so. Hypoid gear oil = oil for hypoid Gears.
I believe Hypoid designates the type of Gear, not the type of Oil.
Anyone else?
I believe Hypoid designates the type of Gear, not the type of Oil.
Anyone else?
12-21-2010, 04:54 PM
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The difference between a spiral bevel and a hypoid is the offset of the pinion. With a spiral bevel, the centerline of the pinion axis meets the centerline of the gear axis. They only have a rolling motion, like the cylindrical gears in the transmission.
With a hypoid set, the pinion centerline is offset either above (typical front axle in a 4x4) or below (typical rear axle) the gear centerline. This makes for a larger pinion head, but also causes a sliding motion. The sliding pretty much scrapes away the oil film of a standard oil, and you get metal to metal contact. As long as you have an oil with an EP additive and the right viscosity you should be fine.
With a hypoid set, the pinion centerline is offset either above (typical front axle in a 4x4) or below (typical rear axle) the gear centerline. This makes for a larger pinion head, but also causes a sliding motion. The sliding pretty much scrapes away the oil film of a standard oil, and you get metal to metal contact. As long as you have an oil with an EP additive and the right viscosity you should be fine.
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12-22-2010, 03:02 PM
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"Honda motorcycles division produces a gear oil labeled 'hypoid gear oil' "
I see it's rated for GL-4/GL-5. That's good. I hope it holds up better than the stock/factory oil that Honda uses in our cars. That crud is shot after 10,000-15,000 miles.
I see it's rated for GL-4/GL-5. That's good. I hope it holds up better than the stock/factory oil that Honda uses in our cars. That crud is shot after 10,000-15,000 miles.
