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Message Subject: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Bigman

Posted 12/6/2016 5:09 PM (#838244)
Subject: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Posts: 281

Location: ROckford IL

What do you guys use for the lower unit lube

musky513

Posted 12/6/2016 6:44 PM (#838254 - in reply to #838244)
Subject: Re: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Posts: 524

I switched to amsoil synthetic this year and have been happy with it.

btfish

Posted 12/7/2016 6:17 AM (#838289 - in reply to #838254)
Subject: Re: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Posts: 410

Location: With my son on the water

What the manual calls for.

kjgmh

Posted 12/7/2016 8:06 AM (#838300 - in reply to #838244)
Subject: Re: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Posts: 1087

Location: Hayward, WI

Any quality marine gearlube will work fine. Lower units are not very complicated.

VMS

Posted 12/9/2016 10:57 AM (#841553 - in reply to #838244)
Subject: Re: Which lower unit oil you use in a 2008 115 Mercury Optimax engine

Posts: 3480

Location: Elk River, Minnesota

Hiya!!

The one nice thing about synthetics is they do a better job of staying more fluid in colder environments. In the case of our lower units always being in a cooler environment, that is a good thing during summer, but in late fall, early spring, the lubricants that are more oil based can be a bit thicker. Lubricity is still there, but I do feel you lose some performance...more or less a touch of top speed is taken off.

I'm an Amsoil proponent as it is american made and synthetic. Their stuff is great!! Stays viscous at all temps... Many local Napa stores (at least in the Twin Cities area) now carry it, which is a nice thing...

What did you upgrade to my friend?

Steve

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