My engine ran down 3 quarts of oil without
my knowledge. When I noticed a very
different noise and drove it home . Which
was about 20 miles. My garage man added
3 quarts of oil, and it still kept making that
So the real question is now that it has the
proper amount of oil, will the engine seize
Without seeing the car, it's not possible to tell how much damage was done or actually where the noise is coming from. You have a mechanic; ask him.
so you drove it 20 miles 3 quarts low on oil ? good for you
Put butter on it because it is toast.
You have very possibly damaged the engine. Use the dipstick, that's why it is there!