I just purchased my first 2-cycle tool: an Echo PB-2620 blower. My property is fairly small (6k sq-ft lot) and while I do plan to blow the premises weekly, I am not sure how much fuel I will go be using. For now, I purchased a one-gal gas can and mixed Echo Red Armor at ~40:1 with 1-gal of Shell 93, which is E10. Do I still need to add Sta-Bil to the gas can, or does Echo Red Armor contain enough stabilizer? Someone suggested that I should purchase the E0 cans of fuel from HD, but $24.95 for 110 oz seems outrageous if I can make a mix myself for much less money....even if I have to dump the "stale" gas into my own car every 3 months. Thoughts?