What is the recommended oil type for the 2003 Solara?

The 2003 Toyota Solara with the 2.4L 4Cylinder engine should be filled with a synthetic SAE 5W-30 motor oil. Given the age of this vehicle, You might consider going with one of the high mileage specific blends. If You live somewhere that never drops below zero, You can also consider going with a viscosity of 10W-30 for a boost in engine performance. Using the recommended synthetic, You don't need to worry about oil changes as frequently, and can go about 7,000 miles or a year between changes. A good filter to use when changing the oil is WIX'S57145, but You can use any brand aftermarket one; note that not all come with a bracket. When You tighten down the oil drain plug, You'll want to do so at 18 pound feet of torque.