Steve
If there is anything else that comes along just post it here. You will always get help. When you buy your oil look for one that will work on all engine's not matter what the mix ratio. I used the Ryobi 2 cycle oil first at a 32:1 ratio and it work real good, but when I tried the Opti-2 oil I was sold and I have never go back. I am running the Opti-2 Oil in all of my 2 cycles engines weather they are for RC or just keeping the old weedwacker running good.
Have a Ball Steve. I know I am