MeTaLaNgLeR
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Oil/Fuel Mixture
Hoping someone has the answer or can lead me in the right direction to find one. I have a Mercury 150 hp outboard on my boat, I use 1 quart of oil per 12 gallons of gas. I use that because the guy that had it before me used that ratio, anway, I bought a 9.8 mercury over the winter. Do you think I could use the same fuel/oil mixture, because they both take the same fuel line connector and that would save space on my boat if I didnt have to bring an extra fuel tank.
The year of the 150 is an 87
The year of the 9.8 is an 84...so I am told
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smallie2
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RE: Oil/Fuel Mixture
2010/03/22 16:19:04
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Should be 50 to 1 That', about what you have is 48 to 1
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Pork
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RE: Oil/Fuel Mixture
2010/03/22 16:24:02
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Yep, roughly 50:1 My old Johnson 9.9 takes 50:1... sorry, no real help.... but we're geting somewhere by process of elimination.  EDIT: Here's a link... http://www.outboardrepairs.com/topics/002600.html confirms 50:1...but it's just a message board.  
post edited by Pork - 2010/03/22 16:27:43
"If you ever get hit with a bucket of fish, be sure to close your eyes." ><)))*>
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bulldog1
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RE: Oil/Fuel Mixture
2010/03/22 16:27:06
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RELAYER
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RE: Oil/Fuel Mixture
2010/03/23 08:01:00
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50 to 1 = 16oz of oil to 6 gals gas. I have a old johnson 9.9 we use only for trolling and 50 to 1 is way to much oil for trolling we constantly were oil fouling plugs even with the hottest plug gapped .005 more so we started backing off on the oil mix we now use 12oz synthetic oil to 6 gals gas hardly ever foul plugs anymore. I would never use this mix if I were going to run this motor wide open for any period of time. If my big motor quits I would never use my kicker to try and run in that's why every year I get Lake Shore Towing Insurance $90.00 for ALL of Lake Erie cheap peace of mind. I would never ask someone to take their valuable fishing time to tow me in.
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Jtownoutlaw
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RE: Oil/Fuel Mixture
2010/03/23 08:25:16
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I have the same 9.8 that you do....running 50 : 1 and it is working out just fine.
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MeTaLaNgLeR
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RE: Oil/Fuel Mixture
2010/03/23 09:17:29
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Thanks everyone, hopefully I will have it ready this weekend to try to start it.
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bulldog1
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RE: Oil/Fuel Mixture
2010/03/23 10:12:57
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Relayer has a point, when using the motor for trolling only you may want to mix it a little leaner. I have known people that kept two tanks in the boat, one for trolling and one for running. FYI the Boat US membership is less expensive and Lakeshore is still your towing service on Erie plus it covers other areas as well, I'm also switching my insurance to them this year.
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RELAYER
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RE: Oil/Fuel Mixture
2010/03/24 08:18:32
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Might look into boat us insurance for next year i'm paid up for 2010 with lake shore towing. Probaly won't be fishing PA waters this year moving my camp out of Lake Erie Commnuity Park(tired of all the BS there) Found a great new campsite inbetween conny and bula 7min to conny 12min to bula right on the conny creek just south of rt20 250.00 cheaper can't believe how nice this campground is,no longer have to support the PA TROUT COMMISSION GOODBYE PA OHIO HERE I COME!!!!!
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MeTaLaNgLeR
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RE: Oil/Fuel Mixture
2010/03/25 08:05:03
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Got that puppy running last night, second crank she fired up. Runs pretty good I guess I took it up and down the river a few times last night. Thanks for the info everyone. KPD watch out!
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leadmen
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RE: Oil/Fuel Mixture
2010/03/25 09:32:00
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50 to 1 is good i used a 1964 9.9 for years for steelies and found that when i switched to a syn oil west marine oil it smoked alot less and left no slick like a old outboard does also seem to run smoother
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woodnickle
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RE: Oil/Fuel Mixture
2010/03/25 09:42:44
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O no , KVD the second.lol  You,ll be taking Kims job. 
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BIGHEAD
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RE: Oil/Fuel Mixture
2010/03/26 06:23:48
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I have 1985 evinrude 9.9 on the toon-boat and takes 100 to 1 Never really heard of a mixture that light before. Well for a boat motor. Kind of nice use quite a bit less oil. Dave
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