Alright, I might be a little crazy, but... I pushed my 77 c10 out of my pole barn, turned it around, and pushed it in reverse back into the pole barn. My young sons were helping me push it. When we got it into place, one of my 9yo boys said there was oil leaking out. I looked down, sure enough, there was oil. I popped the hood and oil was leaking out of the oil fill/cap. I've only had this truck a short while, driven it very sparingly, and there's never been oil. Any ideas?