Running 2 saws

[mac53]

I am new here so please be patient with me.

I am going to start cutting firewood to sell and have a question.

I have 2 saws a Stihl {can't remember model number} that is tuned to run on AV fuel and an Echo 440 that runs on regular 2 stroke mix.
My question is would you go ahead and run the 2 different fuels, or should I have the Stihl retuned to run regular 2 stroke?

I run the different fuels last year and did ok but was always worried that I would get the 2 fuels mixed up in the wrong saw.

I am wanting to buy a new saw and am thinking that that just running one type of fuel makes sense.
So what would you do in this situation?
Thanks in advance

 

[Cooperize]

Run same fuel and oil if you don’t put the wrong one in someone will and it’s embarrassing trying to explain to the dealership that the brand new saw you got needs a new top end

 

[Bob Hedgecutter]

Same fuel, same oil, same ratio for all.
AS LONG as all saws are tuned for that mix.
One fuel for all means one container, less confusion, less risk and less chance of multiple fuel mixes going stale in multiple cans.