Hello people, first time poster looking for some assistance. I was heading on a trip today while running on the highway, my car overheated. It didn't drop any oil, but the oil level was next to nothing. I added oil to it, after cranking up again, to get back home, the engine was skipping out in 4th and 5th gear. I was smelling exhaust fumes and It was running hot somewhat. It's not leaking oil anywhere so I am wondering if it might be a problem with the carbs. If anyone can give me an idea, it would be greatly appreciated.