DELTA PLUS TURBO 15W40 CI-4 PLUS

It looks like you're referring to a type of diesel engine oil with the specifications "15W40 CI-4 PLUS" and the brand "DELTA PLUS TURBO." Let me break down the information for you:

15W40: This is the viscosity grade of the diesel engine oil. The "15W" indicates its low-temperature viscosity, which means the oil behaves like an SAE 15W oil when cold. The "40" indicates its high-temperature viscosity, which means the oil behaves like an SAE 40 oil when hot. This oil is suitable for a wide range of operating temperatures.
CI-4 PLUS: This is an API (American Petroleum Institute) service category for diesel engine oils. The CI-4 PLUS specification indicates that the oil meets certain performance requirements for use in high-speed, four-stroke diesel engines. It offers improved wear protection, soot control, and oxidation resistance compared to previous API categories.
Brand - DELTA PLUS TURBO: "DELTA PLUS TURBO" is the brand name of the diesel engine oil. Different oil brands may have their own formulations and additives, which can contribute to the overall performance of the oil.
Diesel engine oils are designed to provide lubrication, protection, and performance enhancement for diesel engines. The specific viscosity grade and API service category help determine the oil's suitability for various engine types and operating conditions.

When selecting an engine oil, it's important to follow the manufacturer's recommendations for your specific engine model and usage. Using the correct type and grade of oil helps ensure optimal engine performance, fuel efficiency, and longevity. If you have a specific question or need more information about this particular diesel engine oil, feel free to ask!