What is the oil mix ratio for this motor. Thanks
We need a model number to determine which company manufactured your motor and what year it was produced. That will help determine the fuel mix and how to drop your lower unit.
16:1 is a good safe bet on any old 2-cycle machinery if the fuel:oil ratio is unknown.
Oil has gotten a whole lot better over the years and you could probably get away with a mix as high as 32:1 with no ill effects. I use 32:1 in every 2-cycle engine I own and have never had a problem due to poor lubrication nor has my father before me. If you're a worrier, too much oil is always better for an antique engine but not good if you're prone to hugging trees.
Make sure you use good oil made for 2 cycle engines. Use tw3 for water cooled engines and tw for air cooled engines. I am told that tw can be used in water cooled stuff but tw3 should not be used in air cooled engines as the lubricating properties are not as good at the higher temperatures .
Actually, if I can find the thread i'll post it, but the Walmart brand oil is actually the exact same formula, right down to the last molecule, as Shell oil. Probably still avoid the dollar store stuff.