What oil should I use in the winter?
What oil should I use in the winter? A multi-viscosity 5W30 oil flows quicker in cold weather and is recommended for year-round protection, and a synthetic 5W30 multi-viscosity will provide the best protection you can get in both extremely cold weather and extremely hot engine temperatures. Should I use thinner oil in winter? A thinner oil will move through the engine much easier, and it not only helps with the fuel-efficiency of the vehicle, but it's also a necessity during the colder months. In the winter, all of your fluids thicken, particularly transmission fluid and oil. Which is the reason...