Differences between Castrol bulk oil and small bottles?
2 Answers
Differences between Castrol bulk oil and small bottles include the following: Finished packaging: Small bottle oil comes with independent packaging; bulk oil does not. Price aspect: Independently packaged small bottles of oil are more expensive than bulk oil. The higher cost of small bottle oil lies in the packaging—small bottles incur packaging fees, while bulk oil does not. Quality aspect: Small bottle oil is usually opened only before use, ensuring its quality; bulk oil, also known as loose oil, may be adulterated, and the duration since opening is often unclear.
I've been using Castrol engine oil for many years, and the main difference between large and small containers lies in practicality. Large containers usually come in 4-liter or larger sizes, which are more commonly used in repair shops like ours. They allow for larger refills and cost savings, working out to be 2-3 yuan cheaper per liter compared to small containers. However, once opened, they need to be used up quickly to prevent the oil from oxidizing and deteriorating due to exposure to air. Small containers are much more convenient—1-liter bottles take up little space in the trunk, and you can easily top up the oil whenever you notice it's low. For household cars with smaller oil change requirements, such as around 3 liters, buying small containers is more hassle-free, avoiding the issue of storing opened oil that might go bad. Storage also matters—large containers should be stored horizontally to prevent sedimentation, while small ones can be stored upright.
