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Old 07 September 2016, 10:56   #1
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Is this gear oil a dodgy colour ?

Hi all. Just changing the gear oil on my new tohatsu 2 stroke 9.8. I've drained the old oil and it looks quite a light colour to me - light grey. Is this normal?
Thanks
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Old 07 September 2016, 10:58   #2
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Nope, you have water in that.
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Old 07 September 2016, 11:05   #3
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Oh no. Anyone any ideas re remedials?
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Old 07 September 2016, 11:09   #4
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Is this gear oil a dodgy colour ?

Agree with nos. Need to look at seals as it's getting in somewhere.


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Old 07 September 2016, 11:09   #5
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Replace fibre washers on the"fill level" and "drain" plugs, usually done when doing gearbox oil, some people don't though.

I'd run it for a bit and see if that cures the problem, if it doesn't you'll be replacing the seals.
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Old 07 September 2016, 11:11   #6
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If it's under warranty I'd have it back to the dealer. Might be something simple like a washer or if it's behind the prop or impeller much more complicated (EXPENSIVE).
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Old 07 September 2016, 11:12   #7
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Is this gear oil a dodgy colour ?

Take the prop off and see if there's any fishing line behind the thrust washer. It can damage oil seals.
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Old 07 September 2016, 11:13   #8
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No warranty unfortunately !

I've got new washers. I'll change oil and see how it goes.....

Thanks
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Old 07 September 2016, 11:17   #9
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As the others say..water in the oil. could be the washers if you changed the oil.. Tt happened to my wee 3.3 Mariner two years ago .. and its problem was I had accidentally caught someones old discarded fishing braid round the prop shaft ..and I never noticed. It wore the outer rubber seal allowing the leak.. shouldn't be a hard fix even if it is a seal ?

Hey..I was too long typing..others have covered my thots
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Old 07 September 2016, 11:33   #10
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Thanks guys I'll take the prop off and have a look

This is the first oil change so it shouldn't be the washers. Bolts seemed nice and tight as well

Would it be unwise to replace oil/washers and then run engine for a while and then check oil again? Or should I be investigating seals now? I'm unsure if I can do serious damage or not by operating the engine further....?
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