To find the correct oil, you need to:
1. Locate your engine type: This information is usually on a sticker located under the hood or in the driver's side door jamb. It might say something like "OM647" or a similar alphanumeric code.
2. Consult your owner's manual: Once you know the engine type, your owner's manual will specify the correct oil type (e.g., 5W-30, 5W-40, 15W-40) and the API certification (e.g., CJ-4, CI-4). It will also likely specify the oil capacity.
3. Check for any service bulletins or updates: Mercedes-Benz (the manufacturer of the Sprinter engines) may have issued service bulletins that recommend specific oil types or viscosities over time. Checking the Mercedes-Benz website or contacting a Mercedes-Benz dealer could be helpful.
Without knowing your engine type, I cannot give you a specific recommendation. Using the wrong oil can severely damage your engine. Always prioritize consulting your owner's manual.