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what type of shaft drive fluid is used for a 1981 suzuki GS650

  • Thread starter Thread starter kevinwin
  • Start date Start date
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kevinwin

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A buddy of mine recently bought a 1981 suzuki gs650. I'm helping him with putting the bike back in shape.I need to know what type of fluid & how much is used for the shaft drive?
 
I believe on the 650 the front gears are lubed by your motor oil (not so on the bigger shafties) , as in you dont add any there i dont think. The rear drive uses Hypoid gear oil, 90w? But you cant get that anymore so 80w90 or whatever you can get at the autoparts store will work just fine.
 
Any 80W-90 gear oil is fine. If you want your gears to feel special get some synthetic.:)
 
Right, well, Autozone DOESNT sell 90w. And 80w90 is just fine. So im not going to special order gear oil when whats available down the street for 5 bucks is just fine..

I'm just pointing out the fact that it is available.
 
Right, well, Autozone DOESNT sell 90w. And 80w90 is just fine. So im not going to special order gear oil when whats available down the street for 5 bucks is just fine..

Agreed. Anything near the correct weight ("90" somewhere in the designation) and marked "GL-5" and "Hypoid" somewhere on the bottle will work just fine. Yeah, even the Wal-Mart brand. These gears are under very little stress.

And yeah, the straight 90W is available but it's not usually convenient and it's not necessary. You can also find 90W sold with the boat supplies -- it's used in the gears in some boat drives, apparently.
 
For the final drive gear case its recommended to use Hypoid gear oil SAE90 API Grade GL-5. I run Valvoline Hypoid gear oil 80w-90 API GL-5 with no problems. As for the front drive/transmission it uses the regular engine oil. I'd recommend the rotella15w-40 for your engine. You can get either of these at any autoparts store or even your local wallyworld.
 
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I just picked up a quart of the 80w90 from Walmart. It says GL-5 on the bottle, but I did not see the word Hypoid.
 
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