walmart 2 stroke oil in 150 yamaha

[deshet]

I have a 1994 or 1992 yamaha 150 2 stroke oil injected. The thing does not like to idle low, it all seemed to start one day.

I was running fine for about 10 miles and I got some gas while out on the boat. This was the first time that the boat had every had the new ethonal mixed gas in the tank. I also added the walmart 2 stroke oil to the automatic oiling tank. I have burned up all the shore gas. But the walmart oil is still in the tank.

I have used the walmart oil with no problems in my evinrudes are the yamahas more particular with their oil requirements?

Also my battery is a little weak though I don't think that should matter if the motor is already running.

The motor does not like to idle low, if I rev it up and throw it into gear it will run fine. Idling in Neutral it will cut every couple of mins regardless of how warm the engine gets.

The carbs have been rebuilt and the compression was checked and reported as good.

any one have any ideas?

I hope I gave enough information

Should I take all the oil out of my oil tank. The engine has a little over 800 hours on it.

thanks