Two problems related to engine oil leaking have been reported for the 2003 Nissan Maxima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Nissan Maxima based on all problems reported for the 2003 Maxima.
Oil cooler leak replaced o ring 5 times replaced not fixed yet.
2003 Maxima se 110,000 miles has oil leaking through seals between valve covers and spark plug wires. One ignition coil needed to be replaced. The real issue is that the seals cannot be repaired or replaced. Instead, the valve covers have to be re-purchased adding an extra $290. 00 in parts to a labor intensive bill.