SAE 10w30 synthetic oil.
Yes 10w30 is a good oil for snowblower or lawnmower.
My John Deere snowblower with a 5 horsepower Tecumseh engine takes ( 20 ounces ) which would be .625 of a U.S. quart
As a snowblower is used in the winter use 10w30 weight synthetic oil and change the oil once each year.
There should be a galvanized nipple with a cap on the end of it stick out the back of the snowblower. Take the cap off that nipple and tip back to drain the old oil. Fill oil via yellow oil cap on top of snowblower. Approx 3/4 of a quart.
SAE 10w30
5W30 conventional oil. Straight out of the manual.
be best to drain fuel and replace with correct mixture
what is the capacity
The correct ratio for that particular snowblower engine is 50 parts fuel to 1 part two-stroke engine oil.
10w40 will work fine!
SAE 10w30