What Types of Cars Are Suitable for 0W40 Engine Oil?

[SanFrancisco]

0W40 engine oil is relatively viscous and is suitable for older vehicles with significant mileage or certain American cars that have larger internal bearing clearances in their engines. 0W40 oil is particularly well-suited for German-made vehicles or older cars/engines (with higher mileage). It is also ideal for vehicles that frequently operate at high speeds or under heavy loads. For example, vehicles from the Volkswagen brand. Volkswagen's engine manufacturing techniques differ slightly from conventional cars, featuring cast iron cylinder blocks with larger clearances between the cylinder walls and pistons. This design necessitates higher-viscosity oil to form a thicker lubricating film; otherwise, the pistons may seize under high temperatures. 0W40 oil meets these requirements perfectly. The designation "0W40" refers to the oil's classification. "0W" indicates excellent cold-start performance, capable of meeting engine starting requirements even at -35°C. "40" denotes a medium viscosity at 100°C, corresponding to a kinematic viscosity of 14.5 centistokes (cSt).