usually sae 30, unless it's used in weather under 50 degrees then you can use 10w-30, but you didn't specify what kind of motor it is. 2 cycle or 4 cycle. Use Synthetic oil in any air cooled engine.
10w-30
youtube - push mower oil change.... oil plug under mower deck
SAE 10w30 weight synthetic oil.
If its a push lawn mower. It has no oil release. The mower burns the oil. All you do is replace the oil when it gets low.
30 wt
SAE 30 weight.
What kind of engine? lawnmower, car.
5w30
straight 30 or a 10w30
what kind of oil for a sears push mower and how much?
this should be a straight gas application......4clcle, right? You shouldn't have to mix oil in the gas.
Sae 30w