Yes. You should apply plastic compatible oil to specific points on the model when you hear squeaking. For steam engines, you should apply oil to all side-rod joints and axle ends when you hear squeaking. For diesel locomotives, you should apply Conducta-Lube to the axle ends between the wheel and the plastic truck. This will eliminate squeaking at the point where the axle meets the metal pick-up bar in the truck. It may occasionally be necessary to apply grease to the gear tower of both steam and diesel models, especially if you use your models a lot over a long period of time. If you need to do this, follow the instructions in your manual or contact our customer service department at 386-673-8900, or by filling out the online form at Contact Technical Support.