So I have a really old Civic ('84) Sedan and it recently started overheating. It was running fine Thursday night, I took it back to my friends house. I got up and drove a friend to his house, and we noticed "smoke" coming from under the hood as we were stopped at a stop sign. I then noticed how high my temp. gauge was, as high as it could go, "off the charts" so to say. I checked to make sure it wasn't the rad. fan because it was a fairly hot day. It was working fine. I noticed the "smoke" was coming from the coolant reservoir area. I assumed it was the coolant and I tried driving home after letting it cool off for a while. I made it halfway when my car died at a stop light. I got it out of the way and waited about 15 minutes, got it to start again and made my way home. The car was making a very loud rattling sound whenever I accelerated. It died once more in my driveway when I got home. Again, I waited and started it back up to move it a little bit. I checked the oil and it was very low, although the oil levels have been fine. I haven't noticed any oil leaks either. I also attempted to check my coolant levels but the reservoir is in an extremely awkward spot and I can't read the levels at all. I added some new oil and drove it around just now, it's been sitting since that day. It again overheated, though the oil levels are fine. I don't want to run it anymore until I can diagnose this. I don't have any coolant on me to add either. Any help? Thanks!