VISTA PLATINUM TRACTOR OIL 20W40 API CF-4

It seems like you're referring to a specific type of diesel engine oil, namely "TRACTOR OIL 20W40 API CF-4" under the brand name "VISTA PLATINUM." Diesel Engine Oils (DEO) are lubricants specifically designed for diesel engines to provide proper lubrication, cooling, and protection against wear and tear.

"TRACTOR OIL 20W40 API CF-4" indicates the viscosity grade and performance specification of the oil:

Viscosity Grade (20W40): This refers to the oil's ability to flow and lubricate at different temperatures. The "20W" part indicates the oil's viscosity characteristics in cold temperatures, and the "40" part indicates its viscosity at higher operating temperatures.
API CF-4: This is a specification set by the American Petroleum Institute (API) that defines the performance level of the oil. API CF-4 oils are designed for use in high-speed, four-stroke diesel engines and provide enhanced protection against soot, wear, and deposits.
The brand "VISTA PLATINUM" is the manufacturer or distributor of this particular diesel engine oil. Different brands may have varying formulations and additives in their oils, so it's important to ensure that the oil you choose meets the requirements of your diesel engine.

Before using any specific type of engine oil, including the "TRACTOR OIL 20W40 API CF-4" from "VISTA PLATINUM," it's important to consult your vehicle's owner's manual or the manufacturer's recommendations to ensure that the oil is suitable for your engine type and usage conditions. Using the correct type and quality of oil is essential for maintaining the optimal performance and longevity of your diesel engine.