Why does Cadillac use 0W20 engine oil?

[MacVera]

Cadillac uses 0W20 engine oil because the oil cap is labeled with 0W20, indicating it is the factory-fill oil and also the recommended oil for after-sales service. The primary functions of engine oil are to reduce friction and wear on moving parts, clean sludge and varnish from the engine, neutralize acids produced by fuel and lubricant oxidation, improve piston ring sealing, and cool the engine by carrying heat away from moving parts. Taking the Cadillac XT5 2021 2.0T Two-Wheel Drive Fashion model as an example, this is a mid-size SUV under SAIC-GM-Cadillac, equipped with a 9-speed automatic manual transmission. In terms of body dimensions, the car measures 4813 mm in length, 1903 mm in width, and 1682 mm in height, and it is a 5-door, 5-seat SUV.