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Author Topic:   SEAFOAM and gas additives
PeteB88 posted 09-04-2004 12:25 PM ET (US)   Profile for PeteB88   Send Email to PeteB88  
Are any of you familar with SEAFOAM additive? All this advice on gas treatment is interesting and confusing. Is there much difference in all this stuff? I have used Techron and Lucas products in my vehicles - both w/ good results. I wish I knew a petrolium engineer who could sort all this stuff out for our crew. SEAFOAM smells like alcohol which I know binds water molecules and is primary constiuent of "dry gas". Anything you all can share would be appreciated as I am using older 2 stroke Johnsons and close to owning 92 Yamaha 3 cyl 40 and want to do right as regards preventive effort to keep them healthy, happy and reliable.


Sal DiMercurio posted 09-04-2004 10:45 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Peter, "Seafoam" comes in many different flavors.
They make oil addatrives, gas addatives, rust inhibitors to loosen nuts & bolts.
They one you should use through your engine is the one that knocks the carbon out of the rings etc.
It's not in a spray can so you must put it in a sprayer & spray it into your carbs while at idle, let it sit over night then fire her up in the water if possible because she will want to rev to high in neutral,....put her in gear if she does.
She will smoke like she's on fire & you "WILL" wonder if you ruined your engine because of all the smoke, but it stops & your engine will purr like a kitten.
You should install new plugs "AFTER" the treatment.
SIt also comes in a pressurized can but it's called "Deep Creep" [ it's Seafoam ] & it costs more & you get 4 or 6 oz less than in the non pressurized can.
If you do this every 50 hours the odds of your rings being broken by carbon build-up is near nill.
Florida15 posted 09-07-2004 09:56 AM ET (US)     Profile for Florida15  Send Email to Florida15     
Sal, don't they also make it that you just add to your gas ?
Is this method as effective as spraying it directly on the carbs ?
Sal DiMercurio posted 09-07-2004 10:10 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Yes, the Seafoam gas treatment is the same solution, it's just added to the gas at a much less mixure as a maintenance program to keep the carbon at a minimum, "AFTER" the engine has been de-carbed.
It's also a fuel stabilizer for storing your boat for a longer period of time other than a few weeks.
It does the same thing as "Ring-free [ Yamaha ], Power-tune [ Mercurey or Enginetuner [ Bombardier ].

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