Just recently bought a Lawn Boy 7073 off the side of the road for $40.00, and it starts and runs almost like new. The guy I bought it from said mix 4 oz. oil to a gallon of gas. On the back of the mower itself, it says to mix 8 oz. oil to a gallon if using any oil besides Lawn Boy.
#2
Fireman 123
32:1 or you can go 50:1 with some better synthetic oils.
