To find the correct capacity, you should:
* Check your owner's manual: This is the most reliable source of information.
* Look at a sticker on the differential: Sometimes there's a sticker on the differential cover with capacity information.
* Use a VIN decoder: Online VIN decoders can often identify your axle type.
* Check online resources: Websites specializing in Dodge Ram parts or repair may have charts listing capacities based on axle type.
Without knowing your specific axle type, I cannot give you the correct answer.