I don't really have a need for a pressure washer frequently enough to justify one of the bigger gas-powered units. I do have a medium-sized (3' x 4') motor oil stain on my concrete driveway that I need to clean up.
Has anyone used one of these particular pressure washers before? Think it would be sufficiently powerful to scrape a couple of years' worth of slow oil leaks off concrete? For $79.99, I figure I'll get my money's worth even if I only wind up using it a few times.