Oil to Fuel

[majflyboy]

Don't laugh but just picked up new-to-me boat. It's been 20 or so years since I had one so what oil, weight, rato do I use for a 25hp Mariner? Thanks

[Barnacle Bill]

Use only marine oil rated TCW-3 and mix it 50:1, 1 pint oil to 6 gal gas.

[majflyboy]

Thanks very much.

[CrappiePappy]

,,, just make sure that outboard doesn't have an oil injection system :D
You wouldn't want oil in your gas, if you have oil being automatically pumped in from a reserve tank (on the side of your engine block)

... I'm just sayin ... :p

... cp

[majflyboy]

Thanks pappy, don't think it does since it is 10 yrs old, but will look thanks to your advice.

[skeetbum]

I have an '88 that was oil injected til I had it disconnected. Bigger motor but oil injection been around a minute.