Your wear metals were low becaue you used 4.3 quarts of make-up oil. This seems excessively high give the few miles you have on your car. Did you actually use this much make up oil or is the capacity of your crankcase?
Who cares what the dealership recommends...I'd go by the manufacturer recommendations for the oil change interval. The dealer probably recommends 3,000 mile OCI's just to get more money out of your wallet (just like all the fast-lube places do).