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Final Drive UOA: 2006 Yamaha Roadliner #4436230
06/19/17 07:38 PM
06/19/17 07:38 PM
Joined: Feb 2017
Posts: 23
Virginia
Speedbird001 Offline OP
Speedbird001  Offline OP
Joined: Feb 2017
Posts: 23
Virginia
2006 Yamaha Roadliner (1,900cc a/c V-twin)
Final Drive (No clutch, just chain/gears)

So I'm always a stickler on PM but totally dropped the ball on the final drive... It only holds ~2/3 quart and should be some kind of 80w-90. Manual says inspect / change @ ~ 3-4 years / 3-4k miles. It's a PITA because you have to half take off the exhaust.

Below is what came out. This sample is ~9 yrs old w/ 9,800 miles. (Factory fill was changed by the dealer ~9 years at 600 miles). It looked pretty nasty, but all well used gear oil does IIRC. Below does not look too bad to me, I was expecting worse.

Refilled with Motul Gear-300 75w-90 (Won't be going another 9 yrs though)


Re: Final Drive UOA: 2006 Yamaha Roadliner [Re: Speedbird001] #4436458
06/20/17 05:53 AM
06/20/17 05:53 AM
Joined: May 2016
Posts: 121
Vienna, Austria
alex_at Offline
alex_at  Offline
Joined: May 2016
Posts: 121
Vienna, Austria
I'm not too sure about Gear 300 75W-90 in a shaft drive system, Motul does list API GL4+5, but they don't say hypoid.

I have a 16' Boulevard C50 that calls for 90W or 80W-90 final drive oil, and I asked Motul, they said not to use Gear 300 because it's too thin...

Motul does make a part-syn 80W90 gear oil with MoS2 in it, says suitable for hypoid gears.

Last edited by alex_at; 06/20/17 05:54 AM.
Re: Final Drive UOA: 2006 Yamaha Roadliner [Re: alex_at] #4436559
06/20/17 08:07 AM
06/20/17 08:07 AM
Joined: Feb 2016
Posts: 686
NJ, USA
MotoTribologist Offline
MotoTribologist  Offline
Joined: Feb 2016
Posts: 686
NJ, USA
Originally Posted By: alex_at
I'm not too sure about Gear 300 75W-90 in a shaft drive system, Motul does list API GL4+5, but they don't say hypoid.

I have a 16' Boulevard C50 that calls for 90W or 80W-90 final drive oil, and I asked Motul, they said not to use Gear 300 because it's too thin...

Motul does make a part-syn 80W90 gear oil with MoS2 in it, says suitable for hypoid gears.

If it meets GL-5 it should be suitable for hypoid gears. That's kind of the whole point of GL-5.

I'm not sure what they are talking about when they say it is "too thin". If Suzuki is calling for an SAE 90 then how could a 75W-90 be too thin?

Re: Final Drive UOA: 2006 Yamaha Roadliner [Re: MotoTribologist] #4484473
08/10/17 08:32 AM
08/10/17 08:32 AM
Joined: May 2016
Posts: 121
Vienna, Austria
alex_at Offline
alex_at  Offline
Joined: May 2016
Posts: 121
Vienna, Austria
I don't know really. The info came right from the Motul technician who told me exactly that. Maybe they know some little details that we dont know?

Re: Final Drive UOA: 2006 Yamaha Roadliner [Re: Speedbird001] #4487972
08/13/17 10:25 PM
08/13/17 10:25 PM
Joined: Feb 2017
Posts: 23
Virginia
Speedbird001 Offline OP
Speedbird001  Offline OP
Joined: Feb 2017
Posts: 23
Virginia
Thanks for the feedback gents. To clarify, the Roadliner is a belt drive power cruiser. From the schematics, The "Final Drive" is two big gears and a big [censored] chain. Putting on quite a few more miles this year than usual. Very happy. FWIW, the bike has always been very been a very "Positive Shifting" bike. Since the change, no question, the gear changes are softer.

Re: Final Drive UOA: 2006 Yamaha Roadliner [Re: Speedbird001] #4488629
08/14/17 05:42 PM
08/14/17 05:42 PM
Joined: Sep 2009
Posts: 2,167
Deep in the heart of Jersey
BigCahuna Offline
BigCahuna  Offline
Joined: Sep 2009
Posts: 2,167
Deep in the heart of Jersey
I believe the manual for your bike calls for 80wt Gl-4 rated oil for the transfer case. There might be some brass parts in there, otherwise they would say to use that over Gl-5 oil.,,


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