Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
See the link above. If the leak is in the oil filter area, and it is not the filter. This engine can leak at the seam between the sump and the cylinder block. The gasket between the two sections, will wash out over time, and it has nothing to do with how you take care of it!
If you find it leaking at the seam, the repair is to separate the tow halves and replace the gasket.
I see question is still open, did you see my response?
Thank you. To get credit for the answer, I have to get a posiitve rating from you on the 5 star system. I think you will find the gasket between the two halves will be eroded.