Re: Oil injection system Mercury 90hp
What year 90 do you have?<br /><br />I have an '03 and had similar concerns. When I got last year, ran the 50:1 mix in gas for break in.<br /><br />Posted same question here in the spring when I launced the boat.<br /><br />Conclusion was that if it worked last year, should work this year. I plan to have it checked out every couple of seasons when the water pump is changed.<br /><br />I was still a little concerned this year regarding the oil. I filled it and ran it for decent run. Saw the oil level drop.<br /><br />IT WORKS!<br /><br />But I do see your concern. If I was running portable tanks, I probably would run pre mix 'till I was sure.<br /><br />Related to this. My old 50 ran on pre-mix. It smoked. Less than the 90? Probably but it never really bothered me.<br /><br />I do understand the convenicence? of premix. Went to town. Forgot to check reservoir. Had to go buy a pint. Probably had enough to get back, but always a little paranoid. Never happen with premix.<br /><br />My 1954 7.5 evinrude running 24:1 smokes a fair bit but not annoyingly a lot.<br /><br />I think that eventually pre-mix is the way I'll go.<br /><br />What is the real advantage of injection?<br /><br />Joe
