In hot weather it would (or should) not be a problem. 30wt and 10W30 are generally the rule.
I use two stroke oil
No, absolutely not. It is far to heavy for an air cooled lawn mower engine. Use 10w30 or 30 weight in the summer. I recommend synthetic for an air cooled engine.
I use 5w-30
It depends on the mower. Some use 30 weight. Some use 10w30.
sae 30
yes
Usually, its SAE 30.
Hd 30w
10w30 will do.
30 wt oil
SAE 30W
Yes.