Tecumseh 4.5hp block crankcase breather repair

[@AudioFreqx]

flame much hotter at the tip

[@adamaylon8841]

I have a tecumseh 4,5 of my lawn mower. My question is : do this engine have valve.
Ciz i want to put some oil in the engine but dont know wich one .
SAE 30 not for valve engine
or
SAE 10-30 good for engine with valve