'68 20hp johnson lower unit lube

dlynne

Cadet
Joined
Dec 10, 2010
Messages
10
Playing around with an "inherited" '68 20hp Johnson.

Drained lube from lower unit. It didn't have but a coupla oz. in it and it was "tan-milky" (?). I guess I wasn't so surprised at the consistancy of the fluid as I was that it had so very little it had in it. If the water was leaking into it, I guess I would have assumed there would have been more total fluid in it.

Either way, with the unknown of how long it has been that way, I would assume that the potential for major problems is there?
 

kbait

Commander
Joined
Nov 13, 2007
Messages
2,471
Re: '68 20hp johnson lower unit lube

Fill it with new lube, install new drain plug washers, and give it a go. After a run or 2, let the motor sit upright for a couple hours and pull the lower drain plug. If it's water or milky grease, you have water intrusion. Good luck!
 
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