I've got a 2006 FX45 with 172,000 and a 2009 FX50S with 105,000. Both use 1 quart every 5,000 miles, which in all the years I've owned 20+ cars of all kinds from 4-cylinders to 8 cylinders is the best. Most any car at that 4,000-5,000 mileage will need oil--and at that point an oil change is in order anyway. So you seem to be in a quite normal range.