Can Fluid Additives and Maintenance Extend A Cars Life

06 Dodge Magnum with blown head gaskets. Will KSeal Sealer work? 15 Durango 5.7 Stuck oil drain plug 06 f150 Low oil pressure 15 Expedition just shuts off by itself 77 Grand Marquise distributor timing Buying and maintaining a new car when to change fluids? 21 GMC Truck. How often should I change the engine oil?