I switched to Opti 2 stroke oil over 20 years ago and have used the same mix ratio, regardless of manufacturer recommendations in lawn mowers, chainsaws, string trimmers and blowers with perfect success. I immediately noticed some additional power and almost no smoke when compared to standard two-stroke oils. I have never experienced any oil related failures and actually wore out non-engine related components before having problems with engine components. I recommend Opti-2 to anyone who runs two-stroke engines and would like to get away form poor idling, smoke and excessive engine wear.
