I was driving my car home from schools which is about 1.5 hours away and I noticed that there was a subtle rattling noise like it happens when the oil level is low. I kept driving for maybe about an hour and finally made it to the store to buy oil. Once I came out of the store I put 2 quarts of oil in the engine and I tried to start it and now it won’t start or even crack. is my engine seized? It’s got 200k and it’s an 04 g35 6mt.

Thanks in advance

 

Welcome, but that's one hell of a first post. How much oil was showing on the dipstick BEFORE you added any oil? When was the last time before this debacle that you checked it?