will double oil hurt motors?

buckage

Seaman Apprentice
Joined
Feb 25, 2012
Messages
43
I am changing motors. The Evinrude I have on my boat now (225) I have running on premix as I doscoed the VRO when I got it. I am replacing it with Twin Johnson 150 Oc Runners which still have the VRO on them. Will it hurt them to run through the 100 plus gallons of premix still in my tank, or do I have to waste the gas?
 

Will Bark

Lieutenant
Joined
Aug 1, 2010
Messages
1,470
Re: will double oil hurt motors?

They might smoke a little bit but shouldn't hurt them at all.
 

MRneatfreak

Petty Officer 2nd Class
Joined
Feb 20, 2012
Messages
138
Re: will double oil hurt motors?

I thought that running more oil than gas raised operating temperatures? Why couldn't you just not fill up the VRO and let it run dry while you burn up the remaining premix in your tanks? Not real sure how VRO works.
 

hidef

Lieutenant
Joined
Aug 22, 2009
Messages
1,465
Re: will double oil hurt motors?

Running the premix and oil in the VRO will not hurt the engines. They will smoke a little more that is all. 50:1 premix and oil in the VRO is the recommended way to break the engine in when new or after a rebuild.
 

1946Zephyr

Vice Admiral
Joined
Oct 21, 2008
Messages
5,556
Re: will double oil hurt motors?

Well, to use up that fuel mix, you'll be able to feel a lot safer about running your motor at WOT. You won't hurt it a bit.
 

CharlieB

Vice Admiral
Joined
Apr 10, 2007
Messages
5,617
Re: will double oil hurt motors?

At most it will shorten the life of the spark plugs a little.

I'd far rather change plugs than rebuild a motor.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: will double oil hurt motors?

At most it will shorten the life of the spark plugs a little.

I'd far rather change plugs than rebuild a motor.

That doesnt really happen any more either with todays oils. Technology has brought us a long way. I have motors that I run at 12:1 and the plugs are fine.
 

jsproline

Seaman Apprentice
Joined
Feb 5, 2012
Messages
33
Re: will double oil hurt motors?

Some say it will lean the engines out by replacing gas with oil. I Have an 89 225 i used to run heavy on the oil and it would just load up a little at low speeds and smoke a bit but it should not hurt the engine.
 

CoffeeHound

Petty Officer 1st Class
Joined
Jan 20, 2012
Messages
210
Re: will double oil hurt motors?

So !! Who are we to make happy == The Oil Companies by burning a bit more oil and extending the life of the motor ??
OR == The EPA and Motor manufacturer by Not smoking a bit in the harbor and have motor crap out ??
 

buckage

Seaman Apprentice
Joined
Feb 25, 2012
Messages
43
Re: will double oil hurt motors?

Thank all who responded....Good news that I don't have to drain out $500 bucks worth of premixed oil and gas....that's more than enough for another Tuna trip...
 
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