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Crosbyman

Registered: 02/18/09
Posts: 126
Reply with quote  #1 
Must have been asked before but...

Is seafoam, usefull, useless,  or plain dangerous in a 75 ETEC ?

thanks

Good news in Canada...   Canadian Tire now seems to sell all Seafoam products in my area anyway (Montreal). I used to get it  in Platsburg NY  at Walmart)

thanks


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ETEC 75 HP  2005  ser# 05107924
surfishjoe

Registered: 11/08/09
Posts: 15
Reply with quote  #2 
Bump. Use it once a year in the truck. Stuff seems to work, def runs smoother after.


LIQUIDNIRVANA

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Registered: 04/21/08
Posts: 2,320
Reply with quote  #3 

XD100 oil has a built in Decarb Agent. If you use this oil Seafoam is unnecessary. 


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Crosbyman

Registered: 02/18/09
Posts: 126
Reply with quote  #4 
I use xd1000 so that answers it

thanks

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ETEC 75 HP  2005  ser# 05107924
phowler

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Registered: 05/01/08
Posts: 84
Reply with quote  #5 
LN certainly has more knowledge than I but many use Seafoam as a fuel treatment to fight the effects of ethanol and for storage.

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2008 150 E-Tec on a 2008 1850 Ranger Reata, full I-Command gauges.
RandyLinden

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Registered: 11/11/09
Posts: 749
Reply with quote  #6 
My E-TEC gets a cocktail of 1 oz Marine Stabil, 1 oz Mercury QuickClean, and 1 oz Seafoam for every 22.8 litres (6 gallons) of gasoline.
This is a common practice amoung the bass boat community.
Randy

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First 150HO E-TEC 2008
Current 150-HO New May 8,2013
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tripletriangle3

bronze level member 11-2010
Registered: 11/05/10
Posts: 50
Reply with quote  #7 
Randy,
What was the reason this practice came about?
And how was this "cocktail" fashioned?
Thanks.

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E115DSLIIB
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17' Larson Bowrider
seahorse

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Registered: 04/18/08
Posts: 5,868
Reply with quote  #8 
Seafoam is not a recommended product by Evinrude.

Look at the MSDS form, it is composed of pale oil, naptha, and isopropyl alcohol.

Because the fuel does not go through the crankcase like on a traditional 2-stroke, you do not get any cleaning action around the piston rings which is where cleaning is needed.

Because the motor is direct injected, it is sprayed at the sparkplug where it is instantly ignited and cannot perform any cleaning action.



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torew

Gold Level Member 3-2010
Registered: 06/02/08
Posts: 2,132
Reply with quote  #9 
It is necessary to keep focus on what the fuel additive is there for. I can see four good intentions:
  1. Stabilising the fuel in the tank, keep it from degrading
  2. Stop growth of algea or other possible damaging organisms in the tank
  3. Keep water dissolved in the fuel
  4. Lubrication of the injector
Anything else?
tripletriangle3

bronze level member 11-2010
Registered: 11/05/10
Posts: 50
Reply with quote  #10 

If I  understand LN's point correctly that XD 100 has a built in de-carb agent, then doesn't adding the correct amount of 2+4 to the fuel tank take care of everything else? Am I missing something here?


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Kingfisher

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Registered: 04/17/10
Posts: 145
Reply with quote  #11 

Quote:
Originally Posted by seahorse
Seafoam is not a recommended product by Evinrude.

Look at the MSDS form, it is composed of pale oil, naptha, and isopropyl alcohol.

Because the fuel does not go through the crankcase like on a traditional 2-stroke, you do not get any cleaning action around the piston rings which is where cleaning is needed.

Because the motor is direct injected, it is sprayed at the sparkplug where it is instantly ignited and cannot perform any cleaning action.



I'm not disagreeing just want to know, if this is the case, how does anything get to the rest of the engine for cleaning ??
torew

Gold Level Member 3-2010
Registered: 06/02/08
Posts: 2,132
Reply with quote  #12 
Only the oil is able to "clean" the rest of the motor, or rather: Not leave any deposits. A good reason to use XD-100
Kingfisher

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Registered: 04/17/10
Posts: 145
Reply with quote  #13 

I agree but according to the post above the fuel is injected into the cylinder and burned off that instant, the oil is in the fuel, correct. He also said no cleaning action from this. How else does the oil get to the rest of the engine. Not disagreeing, just want to know.

seahorse

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Registered: 04/18/08
Posts: 5,868
Reply with quote  #14 
Quote:
Originally Posted by Kingfisher

 How else does the oil get to the rest of the engine. Not disagreeing, just want to know.


The E-TEC has a pressure oiling system that distributes oil to the bearings, cylinder walls, and pistons depending on the model and year. Only air and oil vapor travels through the crankcase. There is no oil mixed with the gas on the newer E-TECs. This is not a traditional 2-stroke motor.

When decarboning an E-TEC, the cleaner is sprayed thru the air intake so it travels inside the crankcases and around the pistons.

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Crosbyman

Registered: 02/18/09
Posts: 126
Reply with quote  #15 
hum... if the oil is dsitributed/fumed inside the crankcase  what causes  this oil to be consumed if it does not  enter the combustion side of the piston ???



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ETEC 75 HP  2005  ser# 05107924
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