VRO Failure Scenario - What To Do If In The Middle Of Boating?

NoEcm

Petty Officer 3rd Class
Joined
Jan 22, 2010
Messages
90
Scenario goes like this:

70hp 2 Cycle VRO2 Johnson and a 6hp 2 Cycle Johnson on the boat.

The 70hp is fed fuel from a 16 gallon main tank and the oil is mixed in the VRO2 unit.

The 6hp trolling motor is fed with 100:1 premix from a 2.5 gallon portable tank.

I carry enough 2 cycle oil in the boat to mix the main tank 50:1 in case of a VRO2 failure.

So, what would I do in the event of a VRO2 failure?

If I'm close to the dock, I can bring the mixture in the 2.5 gallon portable up to 50:1, slosh everything around connect it to the main motor and bring it home. But what if I'm further away?

1. Pour enough 2 cycle oil into the main tank to bring the mixture up to 50:1 and bring the boat home? How long does it take for the oil and gas to fully mix in this scenario before I should use the main outboard?

2. Pour enough 2 cycle oil into the 2.5 gallon portable tank (to bring the main tank up to a calculated 50:1 ratio) slosh everything around to fully mix everything and then pour this into the main tank? In this case the 2 cycle oil has been mixed with a little bit of gas to help thin it down and hopefully mix faster in the main tank.

Any other suggestions of what should be done? (Just trying to think ahead and be somewhat proactive in case something happens).
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

The oil will mix in the main tank very quickly, so you could run a while on your portable, then switch back to the main tank.
 

parrisw

Ensign
Joined
Jun 8, 2009
Messages
985
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

What about all the straight gas that is in the lines and filter? If you mix it in the tank, how long will it take for the mixed gas to reach the engine? So you might be running with no oil for a period of time, which wouldn't be good!!

You could just eliminate the VRO all together and mix all the time. That's what I do.
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

Remove VRO to Carb line,
Crank into a container till the fuel changes color.
re-connect fuel line.
Continue boating.

100 to 1 in the 6 HP ???
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

What about all the straight gas that is in the lines and filter? If you mix it in the tank, how long will it take for the mixed gas to reach the engine? So you might be running with no oil for a period of time, which wouldn't be good!!
..........quote]

If you were running through the same line filter and primer bulb with the portable then you have very little unmixed fuel. If it is a different line, then pump enough to clear the unmixed fuel before reconnecting.

I have my connections on a switch just after the main tank so that I can switch tanks without those concerns.
 

tx1961whaler

Vice Admiral
Joined
May 31, 2008
Messages
5,197
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

The 6 HP should be running at 50:1
For a couple of years they were advertised as 100:1 engines, but they went back on the recommendation and went back to 50:1. The engine was supposed to have the 100:1 sticker replaced with a 50:1 sticker.
 

parrisw

Ensign
Joined
Jun 8, 2009
Messages
985
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

You'd have to run some real nice synthetic for 100:1 mix, Amsoil is good stuff, would probably be ok, if its just a trolling motor. But even then, I'd probably run 50:1
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,392
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

Let's keep this from the direction of another oil thread !!:):D:)
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: VRO Failure Scenario - What To Do If In The Middle Of Boating?

The early VRO and VRO2 pumps ran 100:1 to 50:1 depending on RPM; that's the "V" in VRO.
 
Top