2 Stroke to 4 stroke Changeout- Fuel cell question

[TheBobcat]

I will be changing out a 2 stroke for a fourstroke. The 2 stroke engine was oil injected however the former owner mixed the oil and gas together in the tank. There is currently about 20 gallons of fuel in the cell that is an oil/gas mixture. After draining the oil/gas mixture what else do I need to do to clean the tank to accomodate the 4 stroke and if any of the gas/oil mix is left in the tank is this something I need to worry about? Thanks

[Holy Smoke]

no

[potty dock]

TheBobcat - 4/19/2008 3:36 PM

I will be changing out a 2 stroke for a fourstroke. The 2 stroke engine was oil injected however the former owner mixed the oil and gas together in the tank. There is currently about 20 gallons of fuel in the cell that is an oil/gas mixture. After draining the oil/gas mixture what else do I need to do to clean the tank to accomodate the 4 stroke and if any of the gas/oil mix is left in the tank is this something I need to worry about? Thanks

A little oil in the gas will actually help you in break in period.

[jethro1]

potty dock - 4/19/2008 1:58 PM

A little oil in the gas will actually help you in break in period.

How so?

[baypro21]

consider it top cylinder lube, just like marvel mystery. It's gunna be so diluted it would be like fartin in a gale force wind, it won't matter.

[KeyPineSavage]

Bobcat

How big is the cell?

[TheBobcat]

The cell is 80 gallons and the motor is used and is plenty broke-in. There is currently 20 gallons or less in the tank.

[KeyPineSavage]

OK. If you drain it and then fill it, I think like everybody else that the oil residue is too small to worry about. If you haven't drained it yet, I think you could probably just run 60 gallons of gas into it, and run the whole 80 through. That much oil should not hurt the four stroke one time. I would clean or change the plugs after running the mix through, but that's maybe easier than draining and disposing of the 20 gallons now in the cell.