perhaps synthetic motor oil.

wrote:
I just acquired an old MW snow blower and need to change the oil, but I
have not idea where the drain plug is. It is a 4HP, Tecumseh from
around 1984. The model number label is worn, so I have no idea what it
is. I have never changed oil on a snow blower, so I don't even know
where to start.

Also, it says to use, 5W-30. Do I use the same kind of oil as I do for
a lawnmower, or do I use auto oil??

Any help would be greatly appreciated.