Why Do Japanese Cars Use Low-Viscosity Engine Oil?
2 Answers
Japanese cars use low-viscosity engine oil because it helps improve fuel economy, saving both fuel and money. Below is an introduction to engine oil knowledge: 1. Concept of engine oil: Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and cushion shocks in the engine. It is often referred to as the 'blood' of a car. 2. Composition of engine oil: Engine oil consists of base oil and additives. The base oil is the primary component of lubricants, determining their fundamental properties, while additives compensate for and enhance the shortcomings of the base oil, providing certain new characteristics. Additives are an essential part of lubricants.
As a car enthusiast, I've researched this issue. Japanese cars prefer low-viscosity engine oil for three main reasons. First is improved fuel efficiency - low-viscosity oil flows better inside the engine, reducing mechanical friction and thereby saving on gasoline costs. Second is their precise engine design - modern Japanese cars have smaller component clearances that require thinner oil for rapid lubrication, especially during cold starts for effective engine protection. Third is environmental motivation - low-viscosity oil helps reduce carbon emissions, complying with strict global standards. Having driven Japanese cars myself, switching to 0W-20 oil did result in lower fuel consumption and smoother acceleration. Remember to perform regular maintenance during daily use and avoid mixing with high-viscosity oils, as this may cause seal ring issues. In summary, this is a wise choice by Japanese automakers pursuing high efficiency and energy conservation.
