SAE 10w30 weight. I highly recommend you use synthetic in an air cooled engine and change it every 50 hours.
Hd 30w
10w30 oil is what is recommended
30W for summer
catcher #c38
If you raise the hood of the mower up it should have it on the yellow detailed sticker of mower. Normally 10w30
The best riding mower for hilly terrain is would be any kind of walk behind mower as you control it's movements, speed, and direction. However, if you have a large yard and want a riding mower newer LG mowers a good bet. An older option would be a Gravely Garden Tractor.
What kind of info do you need? What kind of info do you need?
I have the exact same mower and I use mobil 1 5w30 and it seems to work
SAE 10w30 full synthetic.
regular 10w 30 motor oil
Sae 30w if it is over 50 Fahrenheit. 10w-30 if it is under.
i like 10w 40 because the oil helps cool the engine also but your manual most likely say 30w