I dont drive under severe conditions, so can I follow the manufacturers recommendation for normal service and go longer between oil changes?
Even with the best oil, after a while the additives are depleted and the oil becomes too dirty to function effectively. As most drivers operate under severe service conditions, Quaker State recommends using the severe-service interval recommended in your owners manual. The time limit may come before the mileage limit. Your vehicle owner’s manual specifies the correct oil-change intervals for the carunder both normal and severe-service conditions.