You cannot determine the correct oil type without knowing the year and specific rear axle. To find the correct information:
1. Check your owner's manual: This is the best source for information specific to your truck.
2. Look for a sticker on the differential: Sometimes there's a sticker on the differential housing that specifies the recommended fluid type and capacity.
3. Check the differential tag: Locate the tag on the differential. This tag usually contains information about the axle type (e.g., Dana 35, Chrysler 8.25), which will help determine the appropriate fluid.
4. Use a VIN decoder: Online VIN decoders can provide information about your Dakota's specifications, including the rear axle type.
Once you know the axle type, you can then search for the recommended lubricant. Generally, rear differentials use either a 75W-90 or 75W-140 gear oil, often with specific additives depending on the axle. Some may require synthetic gear oil. Using the wrong type of oil can damage your differential.
