I am such a slacker on my lawnmower maint. I am sad to say that I have never changed the oil or filter in this mower. It still runs well though...Fluid level is full. .
So, I have some car oil in the garage, can I use that to change it? Will there be sludge in the mower? DOn't beat me up too bad guys. Thanks for your help.

So, I have some car oil in the garage, can I use that to change it? Will there be sludge in the mower? DOn't beat me up too bad guys. Thanks for your help.