We have (652) 07-10 Dodge Charger V6's in our fleet, it has been our experience that some of them burn oil and some don't and there is no rhyme or reason to it. Dodge says all engines burn oil which is technically accurate but not at this rate. In fact I had one in particular that was 3 quarts low at 4k, the oil was changed and filled, 5k later the engine was knocking with 3qts low again. Dodge had to replaced the engine with 9k miles. Each employee is required to check the oil at the beginning of their shift now.