I have had very good service from my 2003 Johnson DF140 (same motor, different paint). I would say that mine has been close to 50/50 salt/fresh water use, I have had no problem with corrosion. But mine rarly stays in the water for more than a few days and I am meticulous about spraying it off and flushing it after salt use.
The motor pushes my boat nicely (40 mph top speed GPS measured), gets close to 5 mpg, starts on the first crank every time (even after sitting for a couple months), and the only things I have ever done to it is oil changes, water pumps, and spark plugs.
Just two weeks ago in the Keys I put the boat on gear to pull away from the gas pump and a guy on the dock looked astonished and said "I didn't even hear that thing running".
Mine new in 2003 was around $7200.
If you get it you will love it.
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Stay Safe!
Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke.
1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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