I usually put about 150 ML of mixing oil in 4 litres of gas..but for some odd reason i put 150 ML in 2 litres of gas n couldnt figure out why it was soo hard to start...took my plug out..jet black n dirty so i thought hmm carb problems. I take off the carb n stick my fingers inside the intake boot n all i can feel is oil and the carb was filled with mixing oil 2. Later i realized what i did n how stupid it was. Well you live n learn.
peace
al