Please note that the PICTURE UPLOAD function is not working. The iBoats Forum Moderators are working with the system administration folks at the parent company to get the issue resolved. This happened about a year ago and here we are again. In the meantime you can post photos as links to a picture hosting site of your choice. We are sorry about the inconvenience and will advise when the issue is resolved. Thank you for your patience.
I’m pretty sure full synthetic lube for lower unit is best. This is why. I had an 80 ton crane (125,000 lbs) it had planetary gear final drives at each wheel. We put synthetic gear lube in one side and conventional gear lube in the other. After a road trip we checked temps with infrared heat...
