Unless you live in a cold climate, ordinary 30W motor oil is fine. In cold climates, 10W-30 may make starting easier. You don't need expensive synthetic oil. Sounds like you want to take good care of your equipment. Tip: the air filter is a critical component in tillers since they work in dirt constantly. Check it regularly and change it when dirty. That will do the most to prolong the life of the engine. Good luck, and please rate my advice if you find it helpful, thanks!
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Unless you live in a cold climate, ordinary 30W motor oil is fine. In cold climates, 10W-30 may make starting easier. You don't need expensive synthetic oil. Sounds like you want to take good care of your equipment. Tip: the air filter is a critical component in tillers since they work in dirt constantly. Check it regularly and change it when dirty. That will do the most to prolong the life of the engine. Good luck, and please rate my advice if you find it helpful, thanks!