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Old 03-17-2008, 11:57 PM
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Default Locker Lube?

What's everyone using for gear oil in their 9 inch Detroit locker?

Last edited by chuckyt1; 03-18-2008 at 09:14 AM.
Old 03-18-2008, 02:05 AM
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which locker? are you talking about the factory zexel?
Old 03-18-2008, 10:20 AM
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Regular Valvoline 75-90 weight. Like recomended. You are not supposed to use synthetic or any additive (Its is not a LSD therefore you do not need it) In fact if you do use synthetic, it will void the warrenty.

You can go to a heavier weight (some say it quiets the locker mechanism down) but I kinda like the clunking LOL.
Old 03-18-2008, 10:44 AM
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Since when does the use of synthetic oil void the warrenty of a locker?
Old 03-18-2008, 11:00 AM
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Originally Posted by alamantia
Since when does the use of synthetic oil void the warrenty of a locker?
https://ls1tech.com/forums/gears-axles/883571-synthetic-oil-note.html

Look at the Eaton's install instuctions on the Detroit Locker. They Specifically tell you NOT to use Synthetic oil.
Old 03-18-2008, 11:04 AM
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Thats just a post on a forum. Heres the owners manual for an Eaton Detroit Locker, you tell me where it says the warrenty will be void of you use synthetic.

http://www.eaton.com/ecm/groups/publ.../ct_128312.pdf
Old 03-18-2008, 11:19 AM
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Originally Posted by alamantia
Thats just a post on a forum. Heres the owners manual for an Eaton Detroit Locker, you tell me where it says the warrenty will be void of you use synthetic.

http://www.eaton.com/ecm/groups/publ.../ct_128312.pdf
You are Right I just called Eaton, They recomend not useing Synthetic but if you do, it will not Void the Warrenty on the Detroit locker.
Old 03-18-2008, 11:27 AM
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I have had two lockers in the past and I can not ever remember there being any stipulation in the owners manual. I could understand in an Eaton LSD where theres friction involved between the clutch packs, but for a locker... idunno, i couldnt see it being an issue.




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