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Old 04 July 2015, 14:33   #1
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water in gear oil???

Need a little bit of help here. Cant find any definitive info online.

What colour should used outboard gear oil be?

Is a light tan/caramel an indication of water?
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Old 04 July 2015, 14:35   #2
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Unless I've suffered water ingress the oil will be similar to new... bit darker perhaps, tan/creamy will be water.

Not the end of the world if the gearcase is filled with proper outboard gear oil which is designed to lubricate OK if there is a bit of water ingress.
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Old 04 July 2015, 14:45   #3
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Need a little bit of help here. Cant find any definitive info online.

What colour should used outboard gear oil be?

Is a light tan/caramel an indication of water?
G/box oil should look as you'd imagine oil to look, like thickish engine oil.

Caramel is emulsified. Drop the lot out, refill with the recommended spec, run it a check it again by dropping a little out. If it's caramel coloured again, you have a g/box seal failure.
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Old 04 July 2015, 15:04   #4
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>>>Not the end of the world if the gearcase is filled with proper outboard gear oil which is designed to lubricate OK if there is a bit of water ingress.

Perhaps I should clarify that... like Mollers I'd change it but I was meaning don't think it will have already trashed the gears.

I use a small syringe with tube on the end that can be pushed into the filler hole and draw a bit up now and again to see the condition.
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Old 04 July 2015, 15:10   #5
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[QUOTE=Fenlander;684702
I use a small syringe with tube on the end that can be pushed into the filler hole and draw a bit up now and again to see the condition.[/QUOTE]

I use an old skool grandad's oil can, keep refilling until upto level.

A tip, my Honda will fool you into thinking that it's upto level when it's not. Give it 5 mins and it'll take another 50cc. It tends to take a while to seep down to the business end.
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Old 04 July 2015, 15:12   #6
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My tube on syringe is just for sampling to look for water. I fill from the bottom to avoid air locks.
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Old 04 July 2015, 15:20   #7
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. I fill from the bottom to avoid air locks.
Tricky when there's a boat attached.
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Old 04 July 2015, 15:34   #8
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Tricky when there's a boat attached.
Standard practice to fill from the drain plug, pumping oil in until flowing out of the level plug, safest way to avoid air locks
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Old 04 July 2015, 15:59   #9
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Standard practice to fill from the drain plug, pumping oil in until flowing out of the level plug, safest way to avoid air locks


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Old 04 July 2015, 16:56   #10
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The fibre washers on the drain and fill plugs are often overlooked. Tohatsu have a specific part and it's well worth renewing. Part number: 332-60006-0. Use a decent flat head screw driver to torque them. If the gear oil has the appearance of mayo at the next service, then the problem lies elsewhere.
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