What type of oil does an echo GT 225 take?

The Echo GT-225 string trimmer typically requires a 2-stroke oil mixed with gasoline. It is recommended to use Echo's brand of 2-stroke oil or an equivalent high-quality oil, mixed at a ratio of 50:1 (2.6 ounces of oil per gallon of gasoline). Always refer to the owner’s manual for specific recommendations for your model.