Final drive oil

[Beer van Huet]

Honda recommends Hypoid gear oil SAE80
I am having trouble finding this designation, however
SAE80W90 is mostly mineral, recommended for (older types) final drives
75W90 is synthetic and does not specifically state for final drives
Which type should I use in our final drive?
And can I mix SAE80 with 75W90?
I am from abroad, so specific brands are no good to me, just the specs and designation
TIA

[mello dude]

Not that familiar with European brands other than Motul... but I am running a Valvoline 75W-90, It does say gear oil on it...

[Chrisj CMA]

You need synthetic hypoid gear oil. There’s a specific gl rating that will be on the bottle. I think it’s gl5 but I’ll post a picture on this reply in a minute as soon as I find it

[-mike-]

Hello, Beer!

That's  what l use for any Valkyrie that comes into my shop:
MANNOL Hypoid 80W-90 API GL 4/ GL 5 LS 1 Liter

You can get it in Netherlands, too:

https://www.amazon.nl/-/en/MANNOL-Hypoid-Transmission-Manual-80W-90/dp/B00HWG2H2E

Best,
mike

[Beer van Huet]

Thank you Mike, super
I ordered Liqui Moly, a well known brand over here
It's mineral and meets or exceeds all specs, I don't want to take any risks with a final drive


https://www.amazon.nl/dp/B00N5ZR1OA?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0&language=en_GB

[-mike-]

[mello dude]

You need synthetic hypoid gear oil. There’s a specific gl rating that will be on the bottle. I think it’s gl5 but I’ll post a picture on this reply in a minute as soon as I find it

Ah... you made me go look at the Valvoline bottle.. -- Yup, I'm good.. 

[98valk]

Honda recommends Hypoid gear oil SAE80
I am having trouble finding this designation, however
SAE80W90 is mostly mineral, recommended for (older types) final drives
75W90 is synthetic and does not specifically state for final drives
Which type should I use in our final drive?
And can I mix SAE80 with 75W90?
I am from abroad, so specific brands are no good to me, just the specs and designation
TIA

from my earlier post,

A lubricant may merit having a high VI for one or more of the following reasons:

    The optimum viscosity is not known
    Varying loads and speeds exist
    Varying ambient temperatures exist
    To boost energy efficiency
    To boost oil service life (lower average temperature)
    To boost machine service life (fewer repairs and downtime)

https://www.valkyrieforum.com/bbs/index.php/topic,110541.0.html

[Beer van Huet]

Thanks for your elaboration, 98Valk
Very interesting and good reading.

I am getting a bit confused
Honda sells hypoid oil SAE 80W90 (specifically for GW final drives). But I cannot find its VI anywhere
I just bought mineral 80W90 hypoid oil. It has a VI of 105 and API GL5

While the synthetic 75W90 has a V1 of 185
I live in moderate climate conditions and seldom ride in freezing conditions nor above 85 degrees temperature
Internet tells me that by VI, 75W90 complies better to SAE80 than SAE 80W90
I now tend to believe that my 80W90 is not OK for my final drive, it is also thicker when cold.
So I will replace the 80W90 with 75W90 for now.

https://pim.liqui-moly.de/pdf/en_GB/liqui/34/P000218