Re: Milky lower unit oil
Used fifty fifty solution of dish detergent and water. Only the prop shaft seal is visible with the lower unit in place, and the prop removed. I had zero bubbles when I tested mine. The soap will not harm the seals.<br /><br />I used the working end of a lower unit lube hand pump that I had available but can be bought at any marine supply shop or Walmart, about ten bucks. It screws into either the top or bottom hole of the lower unit and works perfect. I think any bicycle pump will work. I think they all have a good check valve in them that will not leak. Bought the 0 to 60 psi dial tire pressure gage at Walmart, about four bucks. The part of the dial gage that goes over the tire filler stem unscrews and a standard fitting will screw on in its place. I used a brass tee fitting, some tubing, some small pipe clamps, and some plumbers tape on the threads, about five bucks. I used the end of a cheap small paint brush to plug the end of the hand pump fitting when testing the test rig joints being careful not to break it off. No need to jamb it much. It works perfect as a plug. Pump the rig up to twenty or so pounds and squirt the soap solution all over the joints. Keep working on them until they are all air tight, no bubbles at all. Properly assembled this test rig should hold at whatever pressure it is set at for hours. <br /><br />No vac test. Did not know how to go about that one.
