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Lower unit oil #10598158 02/06/15 05:29 AM
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MATTSUEY Offline OP
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Changing my impeller/and my lower unit oil, 93 Johnson GT 200,is all the Evinrude/Johnson lower unit oil synthetic these days? I'm sure it's "safe", but anything I need to know?

Re: Lower unit oil [Re: MATTSUEY] #10598417 02/06/15 01:22 PM
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boatmannmike Offline
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Not really Outboard lower unit oil differs from automotive in the sense that it does not expand or foam like that in your rear end of your automotive It also will separate if water enters. In theold days there was a type "C" that was used in electric shift units. Just make sure the lable says "Outboard Lower Unit oil" And mostly Stay with Major Brands

Re: Lower unit oil [Re: MATTSUEY] #10598452 02/06/15 01:36 PM
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gary purdy Offline
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No their is the petroleum based, synthetic and blended option. Full synthetic is more expensive. Most all gear lubricant has rust inhibitor's now days. I am using Mystic JT7 gear oil in everything. Replace the 2 plug gaskets.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: Lower unit oil [Re: MATTSUEY] #10598968 02/06/15 04:27 PM
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MATTSUEY Offline OP
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Thanks !

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