Despite another dreaded "oil thread" the questions are valid.
Don't worry too much about the brand of the oil provided it is TCW-III or equivalent. Echo power blend is fine, and it always makes sense to stick with a top quality company who's been at this game for while, Stihl, Husqvarna, Echo, etc. Probably more important to keep PLENTY in the mix instead of not enough, and use the fuel up or dump it into your riding mower if it gets over a couple months old. Mixing ratios are always controversial topics, I use 40 to 1 and have now since the mid 1970's when I started cutting firewood.
Stabil doesn't do much to prevent the octane loss, or not enough impact on it and if you are using E-10 it will pull-in some water and end up forming "apple jelly" in the bottom of the fuel can or fuel tank. So best advice I can give is to make sure the fuel is "fresh" and if/when you aren't going to use your saw or other power equipment for many month.....get it running, dump the tank, and run the engine till it stalls out. If you are able pull the choke out as it dies out to suck all the fuel you can from the carb.
If you follow that deal you'll minimize to potential to plug things up which cause the demise of more of these small engines than any other reason......IMHO......Cliff
