In 1966, when I was about 15 years old, I bought one for $20 and used it for a "woods car" to drive around (illegally) in the South Jersey Pine Barrens. Long gone, but great memories. The A40 engine burned a lot of oil. I was always begging for used oil from my Dad or neighbors (after they did an oil change). The car never got actual "new" oil. One time, we couldn't find any oil so I went searching in my father's shed. I found "oil-based" paint. I figured, "What the heck....better than nothing!". The exhaust smelled awful for quite a while after that. Eventually, the engine spit a rod and piston out. I pulled the pan and cleaned it out as best as I could. Then I re-sealed the oil pan with sheet metal, canvas, self-tap screws, caulk and probably whatever. I disconnected the valves on the dead cylinder. After that, it was a "triple" instead of a "four". It leaked more than ever, so I would put an old bucket under it to catch the dripping oil.....and then pour it back in. I still have the rod that escaped from that engine. It's a paper-weight on my desk. Here's pictures of it from back in the day: