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Author Topic: Rear drive oil  (Read 3210 times)

Offline MetrickMetal

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Rear drive oil
« on: September 11, 2012, 09:44:30 PM »
Has anyone used any Amsoil 75w-90 long life synthetic gear oil in the rear drive unit on a C10, as I have a qt of it left over from my VTX1800C in which it worked great for nearly 70k, and It should work just as well for rear drive oil on the C10 I'm resurecting. 
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Offline midnightrider

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Re: Rear drive oil
« Reply #1 on: September 12, 2012, 03:52:46 AM »
Should be just fine. I've used 75w-90 in synthetic and semi-synthetic with no issues. I just rolled over 75,000 miles.   :popcorn:
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Offline MetrickMetal

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Re: Rear drive oil
« Reply #2 on: September 12, 2012, 12:35:48 PM »
Quote from: midnightrider on September 12, 2012, 03:52:46 AM
Should be just fine. I've used 75w-90 in synthetic and semi-synthetic with no issues. I just rolled over 75,000 miles.   :popcorn:

Thanks, and I figured it would be ok, as rear drive units are pretty much all the same.  ;)
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Offline Summit670

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Re: Rear drive oil
« Reply #3 on: September 13, 2012, 06:52:09 AM »
I didn't check the specs but just make sure if it calls for GL4 that you use GL4 rated oil.  I think the Connie is GL5.
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Offline MetrickMetal

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Re: Rear drive oil
« Reply #4 on: September 13, 2012, 07:42:39 AM »
Quote from: Summit670 on September 13, 2012, 06:52:09 AM
I didn't check the specs but just make sure if it calls for GL4 that you use GL4 rated oil.  I think the Connie is GL5.

The Amsoil synthetic gear lube I have is rated GL5, but can also be used in any gear application where a GL4 gear oil is specified.  ;)
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Offline midnightrider

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Re: Rear drive oil
« Reply #5 on: September 13, 2012, 10:45:35 PM »
Connie likes GL5. Page 88 in the owners manual. ;)
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Offline Electroken

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Re: Rear drive oil
« Reply #6 on: September 14, 2012, 04:05:45 AM »
Quote from: MetrickMetal on September 11, 2012, 09:44:30 PM
Has anyone used any Amsoil 75w-90 long life synthetic gear oil in the rear drive unit on a C10, as I have a qt of it left over from my VTX1800C in which it worked great for nearly 70k, and It should work just as well for rear drive oil on the C10 I'm resurecting.

That is what's in mine now.
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Offline Cholla

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Re: Rear drive oil
« Reply #7 on: September 14, 2012, 05:34:48 AM »
Gl5 is backwards comptible. It exceeds the requirements of GL4.
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Offline Necron99

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Re: Rear drive oil
« Reply #8 on: September 14, 2012, 05:53:52 AM »
I too have the same Amsoil oil, also left over from my VTX 1800C.  :)

I add guard dog moly to mine.  I know it's probably overkill....
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