What is the best weight motor oil for 1991 Toyota 4runner?

For a 1991 Toyota 4Runner, the recommended motor oil weight is typically 10W-30. This viscosity provides a good balance of protection and performance for the engine, especially in varying temperatures. However, if you live in extremely cold climates, you might consider 5W-30 for easier starting. Always check the owner's manual for specific recommendations based on your engine and driving conditions.