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Valkyrie Riders Cruiser Club > General > 1500 Tech Board > Final drive oil: synthetic or mineral?
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Author Topic: Final drive oil: synthetic or mineral?  (Read 1078 times)
frenteacasa
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Posts: 24


Madrid, Spain
« on: September 07, 2014, 08:30:02 AM »
I have always put mineral oil SAE 90 in my BMW R100RT. It is hypoid type and exceeding API GL5 requirements.

Do you think it is also valid for the Valkyrie or should I better put a synthetic oil. The manual only says "hypoid SAE 80".

Thanks a lot in advance
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Chrisj CMA
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Posts: 14785


Crestview (Panhandle) Florida
« Reply #1 on: September 07, 2014, 09:11:40 AM »
Without trying to start an oil debate.....I can say with assurance, that hypoid gear oil you use in the BMW should work fine in the Valkyrie, HOWEVER, If you use that I would stick to the service interval in the manual which is like 8K or so, I really cant remember and am too lazy right now to look.  If you go with synthetic you can confidentially go lots longer, so it will last as long as any rear tire.  Changing the oil during tire changes is way easier (the drive being off the bike) than using hoses to fill the dang thing and making a mess all over the wheel and tire.

The last rear wheel I did and R/R on for a new tire was 25K miles on an Avon Cobra, the synthetic oil looked like new.  Non-synthetic would have looked like tar
« Last Edit: September 07, 2014, 09:24:40 AM by Chrisj CMA » Logged
JetDriver
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Posts: 372


Columbus, OH
« Reply #2 on: September 07, 2014, 09:19:16 PM »
Service interval in the manual is 24K, and I agree with Chris that your BMW oil would be fine for Honda's recommended interval.
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hubcapsc
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Posts: 16785


upstate

South Carolina
« Reply #3 on: September 08, 2014, 05:41:28 AM »

I once came into possession of a truly ratted-out final drive whose insides
seemed loose and and worn, lots of play when I turned the pinion cup.
It wouldn't surprise me if it came from a high mileage bike whose owner
never checked or changed the fluid...

I bet that if you keep the right amount of any kind or brand of oil
with a rating similar to "75W-90" in there, you'll be good to go. I've
used Honda oil in mine, and more recently, some Valvoline from
Advance that had the same rating/specs on its bottle as the Honda
oil...

-Mike
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salty1
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Posts: 2359


"Flyka"

Spokane, WA or Tucson, AZ
« Reply #4 on: September 08, 2014, 05:54:32 AM »
Synthetic  cooldude
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1998 GL1500C, 2000 GL 1500CF,2006 GL 1800 3A
98valk
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Posts: 13502


South Jersey
« Reply #5 on: September 08, 2014, 06:25:33 AM »
amsoil 75w90.
used in OTR trucks up to 500k miles change intervals
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1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

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frenteacasa
Member
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Posts: 24


Madrid, Spain
« Reply #6 on: September 08, 2014, 07:07:35 AM »
Thanks a lot  all  cooldude cooldude Next tire change I will put a synthetic oil...
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