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Old 14 July 2016, 04:57   #11
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Mercury
Length: 3m +
Engine: Suzuki Outboard/25/4
MMSI: 235074042
Join Date: Oct 2011
Posts: 3,870
i would crack the bottom filler first to check oil it wont run out very fast as its air locked if its golden its all good if its milky you have water in it could be a seal or it could be getting in through the filler screws if washers are old or it can be black i think its exhaust gases getting in seals again not sure how that happens though,good point from fenlander re two stroke oil if its not been burning all the oil, but my bet is its just spillage.
if you do the gear oil change, both plugs out drain fill from the bottom hole till it runs out the top put top plug in then the bottom job done, if you are doing the seals[hope not] fill whilst it on the bench lot easier.


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Old 14 July 2016, 06:12   #12
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Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 13,109
Quicksilver Performance gear lube is blue. Many others are brown/gold. None should be opaque/cloudy/milky. You can remove a very small amount of gear lube as Jeff says. Top up by filling from the bottom - but you really should be changing it every 12 months anyway - checking the old lube for metal flakes, water ingress etc...

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Old 14 July 2016, 06:45   #13
Country: UK - Scotland
Town: North Uist
Make: Rebtec
Length: 5m +
Engine: Tonhatsu 90 tdli
Join Date: Apr 2014
Posts: 27
I have been meaning to change it all spring, but wanted to get this leak sorted out first. Many thanks to all. I really wanted to get it sorted as one of the other on the island with a bigger rib wants me to to go with him out to St Kilda, I can see it from up the road but never been out there 35nm

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