Re: gear oli for 175 johnson
Im sure your manual will specify an 85W-90 GL-4 Gear libe, The general concensus here on the forum is to use synthetic gear lube, 75W-90 is fine! Synthetics offer general all around improvement from regular gear lubes, anti foaming, better off season protection, and better moisture protection, also higher film strenth, Many use Amsoil, but if not available, you can use any of the High performance synthetic gear lubes.
