1977 70 HP Seahorse

[Fishinmagician]

Hello all, long time reader first time poster.

I have a 1977 Johnson 70 hp seahorse and its mint condition and runs like a top, the question i have and it is probably easy to answer. I change the oil in the crank case all the time to insure the cleanest oil at all times, I know theres nothing wrong with that and the only problem is the cost to do this, but i love this motor and dont ever want it to die. Does any one else do this? or am i a lil over cautious, or what is recomended? once a year?(season)

i was taught by my grandfather that if you keep fresh oil at all times she'll love ya forever! so far so good...


Im just "fishin" for some common ground.....

Thanks.

 

[iwombat]

Re: 1977 70 HP Seahorse

I'm assuming you mean the gearcase oil, since there is no crankcase reservoir in a 2-stroke.

I change mine once or twice a season depending on use. Change as often as you want, but make sure you're using new washers on the drain/fill plugs every time. You'll get water-intrusion otherwise, and your over-zealous changes will actually cause more harm than good.

 

[5150abf]

Re: 1977 70 HP Seahorse

I change mine twice a year and check it once in a while by loosening the drain screw and let a drop or 2 come out just to make sure there is no water.

Changing it too often can't hurt anything but it isn't necessary, twice a year is plenty.