Author Topic: 850 T3 transmission, hypoid gear oil?  (Read 597 times)

Offline elvisboy77

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850 T3 transmission, hypoid gear oil?
« on: March 23, 2019, 01:36:33 PM »
Getting conflicting info on the interwebs.  Ok to use API Gl 5 80/90 "Hypoid" gear oil in transmission?  Manual calls for API Gl-5... Hypoid is supposedly for bevel gears like the rear drive.

I have a quart of this oil and want to use it so not looking for suggestions of other oil as I can get non Hypoid at the store.

Thanks!
Loving life.
2016 Eldorado 1400
2017 Anniversario 750 - #169/1000
1977 850 T3

Offline acogoff

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #1 on: March 23, 2019, 01:39:56 PM »
     No bronzy type metals in the transmissions of a T3, GL5 of your preferred brand will be fine. GL-5 is hypoid oil as far as I know.
« Last Edit: March 23, 2019, 03:18:39 PM by acogoff »
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Marshall County Minnesota USA

Offline Two Checks

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #2 on: March 23, 2019, 02:06:11 PM »
It calls for GL5. You have GL5. Don't over think it.
1990 Cal III f/f  "Il Duce' III"
1987 1000 SPII "Il Duce' II"

Offline elvisboy77

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #3 on: March 23, 2019, 02:39:59 PM »
It calls for GL5. You have GL5. Don't over think it.

Thank you!  I just spent a lot of time replacing the clutch and didn't want to cause any other problems!
Loving life.
2016 Eldorado 1400
2017 Anniversario 750 - #169/1000
1977 850 T3

Offline Muzz

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #4 on: March 23, 2019, 06:32:40 PM »
I think the only reason that they say to use EP oil in my smallblock gearbox is that the transfer gears are helical cut, the box itself are all straight cut and don't actually need an EP oil.
Muzz. Cristchurch, New Zealand
03 Breva

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Ya wake up in the morning and it's there

Offline Guzler

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #5 on: March 26, 2019, 12:21:07 AM »
Getting conflicting info on the interwebs.  Ok to use API Gl 5 80/90 "Hypoid" gear oil in transmission?  Manual calls for API Gl-5... Hypoid is supposedly for bevel gears like the rear drive.

I have a quart of this oil and want to use it so not looking for suggestions of other oil as I can get non Hypoid at the store.

Thanks!
I just went through this with my '77. On a tip from a pro transmission builder the nearest to original spec I found is Castrol 80/90 Limited Slip.
Only been ridden 2 miles but seems smoother on the synchros to me. My 2cents.

Offline Muzz

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #6 on: March 26, 2019, 01:28:56 AM »
I just went through this with my '77. On a tip from a pro transmission builder the nearest to original spec I found is Castrol 80/90 Limited Slip.
Only been ridden 2 miles but seems smoother on the synchros to me. My 2cents.

Never thought of that one.  It gets used in the rear diff of my Nissan Mistral.  Lacks the super slippery stuff so that it doesn't wreck the plates in the diff.  I wouldn't have thought it would apply in a dog type gearbox.
Muzz. Cristchurch, New Zealand
03 Breva

Life is just a bowl of Allbran
Ya wake up in the morning and it's there

Offline Guzler

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #7 on: March 30, 2019, 03:36:55 PM »
Never thought of that one.  It gets used in the rear diff of my Nissan Mistral.  Lacks the super slippery stuff so that it doesn't wreck the plates in the diff.  I wouldn't have thought it would apply in a dog type gearbox.
:azn:
Well. I'm happy with it. Could be this old box is worn out but now, for the first time in 5 years, it's fun to ride.


Offline Sasquatch Jim

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Re: 850 T3 transmission, hypoid gear oil?
« Reply #8 on: March 30, 2019, 04:38:25 PM »
That's a sneaky way to start an oil thread.
Sasquatch Jim        Humanoid, sort of.

 

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