Why Can't the QR Code on Shell Engine Oil Be Scanned?
1 Answers
Normally, if the QR code cannot be scanned, it is likely not a genuine product. However, there are other possibilities, such as Shell's system undergoing upgrades or maintenance, which may also prevent scanning. Therefore, it cannot be generalized. Introduction to Engine Oil: Engine oil, also known as engine lubricant, serves multiple functions for the engine, including lubrication and friction reduction, auxiliary cooling, sealing against leaks, rust and corrosion prevention, and shock absorption. Precautions for Using Engine Oil: When selecting engine oil, it should be chosen based on the engine's requirements, ensuring compatibility. Multi-grade oil is recommended due to its advantages such as fuel efficiency, long service life, and high performance, providing better protection for the engine. The oil level should be slightly below the mark on the dipstick and not overfilled.