HI
LAWN BOYMIX IS 32 TO 1- ( one can to two gallons of gasoline available at LOWES AND HOME DEPOT )
YOU NEED TO FOLLOW the directions on the bottle for the proper oil mixture for ANY given oil
do not use a syn oil for the break in ( my opinion )-after the engine is broken in and the internal parts are seated you can go to a syn oil to keep wear down
THIS IS the oil mixture my RC trainner was using on his gasoline stuff ( zenoah ) 20 years ago-his engines ran flawless he was flying for 30 years prior to that when i first met him -he was the top test pilot and and head of the controllers ( safety officers ) he was JOHN WILGOOSE and i owe my success in this hobby for 20 years to him as do many other pilots from CEDAR CREEK in SEAFORD LONG ISLAND NEW YORK I NEVER SAW HIM REFUSE A PERSON WHO ASKED HIM TO FLY THERE PLANE-REST IN PEACE JOHN- he flew everyones everything when it comes to RC airplanes-i will always be willing to help others as much as i can in the hobby for all that man did for me he did what he did just , for the passion he had for this hobby ENJOY BEST REGARDS TONY