What will happen, besides smoking, if a person adds 3 1/2 oz of 2 cycle oil to a gallon and another dummy (me
comes along) and adds another approximately 2 oz to the mix before he is stopped?

Most is 50:1. One older trimmer is 30:1.freddyc said:23:1
Not sure about your equipment but a 23:1 ratio might not be horrible. Some 2 strokes are 50:1 and others are 25 or 20:1.
What is your standard mix ratio for this equipment???????????