How often should Castrol fully synthetic engine oil be changed?

[VanKatherine]

Castrol's fully synthetic engine oil is generally recommended to be changed every 10,000 kilometers. When changing the engine oil, you can use an oil test strip for observation. Take a small amount of oil from the dipstick and drip it onto the test strip, then wait for a period of time until the oil fully spreads. If the oil spreads to the edge of the oil ring, it indicates that the oil needs to be changed. More details are as follows: 1. Castrol: It is a world-renowned lubricant expert and a subsidiary brand of BP (British Petroleum). In addition to producing lubricants for automobiles, Castrol also manufactures other lubricants that directly impact daily life, such as those used in power generation, metal processing, and general industrial applications. 2. Lubricating oil is the gasoline used in cars: Gasoline lubricates the engine and reduces friction, among other functions. The type of engine oil used in a car depends on the driving region and various conditions, and should be added according to the type specified in the car's user manual. Apart from Castrol, there are other engine oil brands available for selection.