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Lower Unit Gear Oil

Posted: May 9th, 2016, 3:01 pm
by feeez
I acquired a dinghy for our boat last season. This will be the first year I am doing spring maintenance on the outboard motor. It is a Mercury 9.9 two stroke.
Our last boat had Mercruiser bravo 3 out drives and I used Quicksilver High Performance Gear oil in the lower units. Mercury's website recommends Quicksilver Premium Gear OIl 80W90 for outboards under 75 hp. I think the other stuff is 90. I have got a bunch left over from the other boat. Is it OK to use it?

Thanks in advance
Fraser

Re: Lower Unit Gear Oil

Posted: May 9th, 2016, 4:10 pm
by SplashyLady
Yes - either oil will work fine. The high performance stuff is more expensive and has additional additives for higher gear loading. :down:

Re: Lower Unit Gear Oil

Posted: May 9th, 2016, 9:21 pm
by Viper
Go with the High Perf

Re: Lower Unit Gear Oil

Posted: May 9th, 2016, 9:56 pm
by feeez
thanks Guys.... That was my gut feel but I alway like to check. I also seems the High Perfomance is more available.

Fraser

Re: Lower Unit Gear Oil

Posted: May 9th, 2016, 10:05 pm
by Viper
It's been the standard go-to for a while so fewer bother to carry the Premium anymore.