lower unit oil for Mercury 18xd

D

dwfizer

Cadet
Joined
Jul 19, 2021
Messages
10
Does anyone know what mercury recommends for lower unit oil for my Mercury 18XD? I am gong to replace it this weekend and dont really know what to replace it with. Thx
 
ThomW

ThomW

Chief Petty Officer
Joined
Aug 8, 2016
Messages
615
With a 18hp, the merc or quicksilver 85W90 lube would be fine. I always use the high performance SAE 90, but that isn't really needed for an 18XD.
 
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