Oil Change

We have a two-car detached garage, but it has not seen any car parked inside for over 10 years now. It is semi-converted to a barn/storage for our backyard mini-farm. I could try cleaning out and use it as a garage, but then I have to build a real barn. Yeah, I like the idea of attached carport on our detached garage. That would be much cheaper than building another garage or separate barn.