How important is oil viscosity for maintaining optimal engine performance in the Toyota Corolla?

I am wondering how much of a difference in engine performance using the right oil viscosity can make for my Toyota Corolla. Should I stick with the recommended viscosity or can I use a different one? Is it worth the extra cost?

Oil viscosity plays a crucial role in maintaining your engine's performance. Using the recommended viscosity ensures that your engine is properly lubricated and runs smoothly. It may seem like a small detail, but using the right viscosity can prolong the life of your engine.

If you're experiencing any engine performance issues, changing the oil viscosity can make a noticeable difference. However, if you're not having any problems, sticking with the recommended viscosity is your best bet. It's always better to follow the manufacturer's recommendations.

Using the wrong oil viscosity can lead to increased wear and tear on your engine, which can result in costly repairs down the line. It's definitely worth investing in the right oil for your Toyota Corolla.