OMG! Plain fossil 30W oil for $10/qt., I''ll bet.
Of course. I don't know the price, I don't bother to check, lol. I just grab what I need, put it on the counter and give them a card. In a pinch I'll use about any motor oil I have around (10W-30 or 10w40) to top off if I have to but usually it's the straight 30 Kawi oil for changes and topping off. Automotive motor oil is formulated for water-cooled engines, not air-cooled ones. Only my truck and the hydros on my Exmarks get synthetic oil.