Used 4 cycle oil in 2 cycle 9.9 Johnson

twodollarbill

Recruit
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Jul 16, 2009
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3
I used a 4 cycle marine oil with my gas in my 9,9 Johnson. Can I just add the right 2cycle oil to it or dump out 5 gallons of gas.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

better to dump it, will foul plugs. in the 40's and 50's they used #30 oil, smoked like a chimney.
 

JB

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Mar 25, 2001
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45,907
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

At what ratio did you add the 4 stroke oil?
 

Whoopbass

Senior Chief Petty Officer
Joined
Jun 29, 2006
Messages
653
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Dump it into your car so your not out anything.
Your car will run fine with it.
 

Eshaw150

Petty Officer 1st Class
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Nov 30, 2008
Messages
295
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

also need to run 50 to 1
 

P 0 P E Y E

Chief Petty Officer
Joined
Jun 3, 2009
Messages
441
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Use it in another machine. Just dilute it with more good gas. Add it to your car and fill the tank the rest of the way at the pumps.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,398
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

It will be fine in the lawn mower or the car and then fill it up as previously stated. Don't plan an e-test till it's well gone though !!
 

samo_ott

Vice Admiral
Joined
Jun 18, 2006
Messages
5,125
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Personally, I'd leave it in the boat and add the correct tcw-3 to make it 50:1. But obviously others do not agree! But 100:1 is a low ratio, dumping it your vehicle would be a close second...
 

ryendube

Petty Officer 1st Class
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Jul 7, 2009
Messages
200
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Personally, I'd leave it in the boat and add the correct tcw-3 to make it 50:1. But obviously others do not agree! But 100:1 is a low ratio, dumping it your vehicle would be a close second...

i dump 2 stroke in my truck all the time. end of the weekend empty boat gas into the truck. otherwise ill never make it home seein as ive spent all my money on beer and minnows :p
 

samo_ott

Vice Admiral
Joined
Jun 18, 2006
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5,125
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Catch the minnows and save the $$$ for beer!
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Used 4 cycle oil in 2 cycle 9.9 Johnson

Wrong oil, wrong ratio. The 100:1 was cancelled in favor of going back to "50:1", which is really 48:1

Add TC-W3 oil to make it 48:1 and go boating. In a 6 gallon tank that would be an additional 1/2 pint TC-W3 oil.

In the future use only TC-W3 and mix it 48:1. . .1 pint per 6 gallons.
 
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