Motorcycle Repair: gear oil, hypoid gears, stroke motorcycle

Question
I have a 1980 900 custom with a dual range transmission--30,000 miles--I ordered hypoid gear oil sae 80w from dennis kirk--anyhow what I got says -Gear Saver motorcycle transmission oil-- on the back it says--for 2 stroke motorcycle transmissions--Question is -- is that ok? and what does hypoid mean anyway?--it doesn't say a thing about hypoid on the quart.--THanks for any help

Answer
Here's a quick explanation I pulled from the web by typing in hypoid gear oil...

Can someone explain the difference between Hypoid and Non-Hypoid
>oil?  

"Hypoid" is not really a question of oil, so much as a question of
gearcutting. Old (1920's) rear axles used straight bevel gears to form
the crownwheel and pinion. These had two disadvantage, the pinion
shaft meets the crownwheel on its central axis, and the straight cut
gears are noisy. By using a more complex "hypoid" gear tooth shape (if
you look at a pinion, the teeth appear twisted) these problems can be
addressed. The more gradual engagement of the teeth along their length
reduces noise. By careful design of the geometry the pinion can be
made to mesh _below_ the axis of the crownwheel. As the centre height
of the crownwheel is fixed by the wheel height, this allows the
propshaft to be lowered relative to the car body, giving a clearer
floorpan and lower centre of gravity for better cornering. Hypoid
bevels are now universal in this application.

Because of the sliding contact that hypoid gears make, their
hydrodynamic contact pressure is higher. To be suitable for use with
hypoid gears, a lubricant must be capable of resisting high pressures.

Oils with "EP" ratings (Extreme Pressure) such as EP90  are required.
Some brands describe themselves as "hypoid" instead, a term which is
synonymous with EP. GL-5 is a formal API standard for this type of oil
(comparable to MIL-L-2105B/C/D)

2 stroke transmissions don't have hypoid gears, so the oil you got probably isn't what you need. You can get 80-85 wt gear oil from any auto parts store, plus you can buy it in synthetic type too! DK made a boo-boo....

Bill Silver