Oil Mixture

[boat_dude]

How do I know if my 1976 Merc 150 motor requires a 50:1 or 24:1 fuel/oil mixture? I've seen both ratios in this forum as possiblities.

 

[JB]

Re: Oil Mixture

Howdy, Dude.<br /><br />I don't think I've seen an engine made after 1970 that didn't call for 50:1.<br /><br />Red sky at night. . .<br />JB

 

[Grizzly]

Re: Oil Mixture

Hey boatdude, 50 to 1. The richer mixtures you have seen are probably for a special purpose like break-in.-G.

 

[Grizzly]

Re: Oil Mixture

Sorry JB, I type real slow and I didn't see your post.-G.

 

[boat_dude]

Re: Oil Mixture

Thanks for the replies. <br />Next question. My 1989 Cajun has a built in fuel tank. Is there an easy way to clean this? Any special cleaning agents that work especially well? It looks like I would have to take the seat deck off to get to the fuel tank.<br />Is there a good place online to look for a replacement fuel tank?<br />This boat has been sitting for awhile and I'm not sure how bad the inside of that tank looks.