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Author Topic: gear box oil with sealed bearings  (Read 124 times)

flyboy

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gear box oil with sealed bearings
« on: July 06, 2014, 03:17:00 AM »
Would 85/140wt gear oil be ok with the sealed bearings? Most everything I've read points to straight 90wt, which were my intentions, but the only gear oil they had were multi grades. Will the 85 be to thin when cold, and conversely the 140 be too thick when hot?
thanks!

Arizoni

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Re: gear box oil with sealed bearings
« Reply #1 on: July 06, 2014, 05:51:52 AM »
The cold 85 wt will be fine when it's cold outside.  It won't thicken up as badly as the recommended 90 weight would at a similar cold temperature.
Likewise the hot 140 weight won't thin out as badly as hot 90 weight oil will when it's hot.

It's a win/win situation.
Jim
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flyboy

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Re: gear box oil with sealed bearings
« Reply #2 on: July 06, 2014, 12:34:04 PM »
Thanks for the reply, Arizoni. I'm going with it then. Didn't think it could have been all that bad....

REpozer

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Re: gear box oil with sealed bearings
« Reply #3 on: July 07, 2014, 07:21:59 AM »
If you use the 140w gear oil , let us know if it shifts well. I wonder if you will miss shift and grind with the thick stuff.
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flyboy

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Re: gear box oil with sealed bearings
« Reply #4 on: July 07, 2014, 10:56:54 AM »
All is back together with the 85/140. Seems to shift fine, but very tight even when cold. I'm thinking it the detent plunger? Gonna try some mor adjustment later today. I did the RS conversion with the sealed bearings so it'll take a bit more adjusting.

I cant see the 140 being any thicker than the grease amalgam that was in there....can it?