A SECRET WEAPON FOR MERCURY OUTBOARD MOTOR TRIM NOT WORKING

Jun 30, 2012 #1 There are plenty of water-in-the-oil threads so I just thought I'd toss this out there. Any water means a seal is leaking, and it can be as easy as an oil fill plug seal or as hard as a prop shaft seal. The key is finding which ones are leaking. When I rebuild a lower unit, I test it for equally constructive and detrimental pressure