This seems a little high for that a few of miles. See if the engine has a PVC system on it because I have had the engine pull
oil through them causing
oil usage. If it has a PVC system on it take it of and install another breather on the engine. If it has two breathers make sure that the plugs are in good shape and put a few more miles on the engine to see if it gets any better.
We have had a problem with some of the Fel-Pro gaskets on the intake side and quite using them a few years back. They would move or tear and let
oil into the intake port and cause oil usage. One of the plugs should look darker than the others if this is the case. Check these things and let me know what you find.
Thanks, Keith