Can you use a thicker motor oil in the summer?

Yes, you can use a thicker motor oil in the summer, as higher temperatures can lead to thinner oil becoming less effective at lubricating the engine. However, it's important to follow the manufacturer's recommendations for oil viscosity to ensure proper engine performance and protection. Using excessively thick oil may hinder cold starts and cause increased engine wear. Always check your owner's manual for the best oil specifications for your vehicle.