08 optimax 225 fuel

Kjmfisher

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Joined
Jun 18, 2018
Messages
19
I had a 98 johnson 225 ocean pro on my boat i just got from a dealership and the motor was bad i filled up the 80 gal fuel tank with the 50/50 oil mix the dealership is replacing the motor with an 08 mercury 225 hp optimax can i run the fuel that i have in the boat throught the optimax or do i need to drain the fuel and replace it
 

tlh 178

Petty Officer 3rd Class
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Jul 14, 2013
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91
optimax runs on a special oil. I wouldn't take the gamble. optimax.jpg
 

dingbat

Supreme Mariner
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Nov 20, 2001
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16,313
You can run a good quality TCW oil in an Optimax. Back in the day, before dedicated DFI oils, most ran Merc Premium Plus oil.

The bigger issue is the Opti is oil injected. You would be running double the oil for the life of that tank of fuel. Plug fouling could be an issue depending on how you use the motor
 

Kjmfisher

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Jun 18, 2018
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19
Well i run the motor at a little over 3/4 throttle most of the time i have a 9.9 pro kicker i use for trolling
 

tommarvin

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Nov 22, 2015
Messages
999
Like dingbat above said,the optrimax is oil injected.
A thought ,what if you use up the premix fuel, and dont fill the oil injection until you use all the pre-mix fuel? will this damage the oil injection?
 

GA_Boater

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May 24, 2011
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Like dingbat above said,the optrimax is oil injected.
A thought ,what if you use up the premix fuel, and dont fill the oil injection until you use all the pre-mix fuel? will this damage the oil injection?

An Opti is a computerized motor and is smart enough that the motor won't start or run if there is no oil in the oil tank. Optimaxs are too expensive to repair.

Please only comment when you know what you're talking about.
 

racerone

Supreme Mariner
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Dec 28, 2013
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Tom , Tom-----I would say you are not very familiar with the operation of an optimax motor !
 

flyingscott

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Apr 8, 2014
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Like dingbat above said,the optrimax is oil injected.
A thought ,what if you use up the premix fuel, and dont fill the oil injection until you use all the pre-mix fuel? will this damage the oil injection?

You would destroy the motor!!!!!!!.
 
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