I have my grandads old chainsaw. The oil to gas mixture says 1/2 pint for each gallon, but I'm not sure what kind of oil to use. It's from the 70's I'm
Open filler neck for the fuel-oil mixture in the chainsaw. Filling the gas tank of a two-stroke engine Stock Photo - Alamy
How To Mix Oil & Gas Guide | 50 to 1 Mix Chart | STIHL USA