How many quarts does a Ram 1500 differential take?

For a Ram 1500, the amount of gear oil the differential needs depends on which axle you have. In general, the rear differential on the common 8.25-inch axle takes about 3.5 quarts and the 9.25-inch rear axle about 3.75 to 4.0 quarts. The front differential on all-wheel-drive or four-wheel-drive models typically takes around 1.5 to 2.0 quarts.

Rear differential capacities by axle type

The Ram 1500 uses two common rear axles, and the capacity varies with which one is installed in your truck.

• 8.25-inch rear axle: approximately 3.5 quarts of gear oil (roughly 3.3 liters).


• 9.25-inch rear axle: approximately 3.75–4.0 quarts of gear oil (roughly 3.6–3.8 liters).

Concluding: These figures are general guidelines. Exact capacity depends on your specific axle code, gear ratio, and whether you are filling to the drain plug or to the designated fill level.

Front differential capacities (for AWD/4x4 models)

On Ram 1500 models equipped with all-wheel drive or four-wheel drive, the front differential capacity is typically smaller than the rear, reflecting the lighter loading on the front axle.

• Front differential: commonly about 1.5–2.0 quarts, depending on the front axle type (e.g., Dana/Chrysler variants) and year.

Concluding: If your Ram 1500 is 2WD, this front differential capacity may not apply. Always confirm with your manual or dealer for your exact configuration.

How to verify your exact axle capacity

Because capacities can differ by year, trim, and axle code, confirm the precise amount for your vehicle.

• Check the owner’s manual or the factory service manual for your exact axle code.


• Look at the axle tag on the differential; it often lists capacity or maps to a known specification.


• Consult a Chrysler/Dodge/Mopar dealer or service bulletin if you have a special axle (e.g., limited-slip or performance variants).

Concluding: Use the exact figure from an authoritative source to guide refills and avoid overfilling, which can cause leaks or other issues.

What oil to use and how to fill

Most Ram differentials require a GL-5 gear oil of appropriate viscosity. Common recommendations include synthetic SAE 75W-140 (with friction modifier for limited-slip differentials) or 75W-90 in older setups. Always follow the specification in your manual and add the correct amount gradually, checking the level as you go to reach the proper fill height.

Summary

In short, plan for about 3.5 quarts for the 8.25-inch rear axle and roughly 3.75–4.0 quarts for the 9.25-inch rear axle. Front diffs on AWD/4x4 Ram 1500s generally require around 1.5–2.0 quarts. Always verify the exact capacity for your truck by checking the axle code, owner’s manual, or dealer resources, and fill to the recommended level.

How much rear differential fluid does a 2012 Dodge Ram 1500 hold?

The rear differential fluid capacity for a 2012 Ram 1500 is approximately 2.32 to 2.85 quarts (2.2 to 2.7 liters), depending on the specific engine. To ensure the correct level, fill the differential until fluid begins to overflow from the fill hole while the vehicle is level. 
This video shows the process of changing the rear differential fluid on a Ram 1500: 38sRudi JonesYouTube · May 31, 2023
Approximate capacity by engine

• 3.7L V6: 2.32–2.85 quarts
• 4.7L V8: 2.32–2.85 quarts
• 5.7L V8: 2.32–3.0 quarts 

Important considerations

• Check for a limited-slip differential: Some models require a specific fluid with a limited-slip additive, while others may require a separate bottle of additive. 
• Use the fill-until-overflow method: The most accurate way to fill the differential is to add fluid until it starts to drip or flow out of the fill plug opening, which indicates the correct level. 
• Have enough fluid on hand: It is recommended to have about three quarts available to ensure you have enough to complete the job. 

You can watch this video to see how to check the fluid level and add additive if needed: 56sSwamp Boys GarageYouTube · Mar 24, 2024

What kind of fluid does a Ram 1500 rear diff take?

The correct Ram 1500 rear differential fluid depends on the gear ratio, but it is typically either SAE 75W-140 API GL-5 for 3.92 axles or 75W-90 API GL-5 for 3.21 and 3.55 axles. For Max Tow or specific configurations, an 80W-90 API GL-5 may be specified. It is best to confirm the exact type in your owner's manual, as it should also be a synthetic fluid with limited-slip additive if you have a limited-slip differential. 
75W-140 API GL-5 

• For: 3.92 gear ratio rear differentials. 
• Note: This is also compatible with Max Tow packages that require 75W-140. 
• Requirement: Often requires a limited-slip additive if the fluid doesn't already contain it. 

75W-90 API GL-5 

• For: 3.21 and 3.55 gear ratio rear differentials.
• Note: Use a full synthetic version for better fuel economy. 

80W-90 API GL-5 

• For: Some Max Tow packages, but always check your owner's manual for confirmation. 

Before you buy

• Check your owner's manual: The most accurate information for your specific vehicle can be found in the owner's manual. 
• Consider your differential type: If you have a limited-slip differential, ensure you are using a fluid with a limited-slip modifier or add the required additive separately. 
• Verify capacity: The rear differential fluid capacity can vary by model, so always check the capacity when purchasing your new fluid. 

How many quarts of differential fluid for Ram 1500?

Check um the manual which I'll put a link for that one as well too it was kind of a pain in the butt. Um figuring out exactly what fluid I needed for this. So let's get under the truck here.

How much to change differential fluid on a Ram 1500?

Changing the differential fluid on a Ram 1500 costs approximately $200 to $300 for a single differential, with the total price depending on the year, model, and shop. Changing both front and rear differentials will be more expensive, potentially costing over $400. The price can also vary based on your location and whether you use a dealership or independent mechanic. 
Factors influencing the cost

• Number of differentials: The cost will double if you need both the front and rear differentials serviced. 
• Service location: A dealership may charge more than an independent mechanic. 
• Vehicle model: Prices can vary based on the specific year and engine of the Ram 1500. 
• Fluid and part prices: The cost of the differential fluid, gaskets, and any other parts will affect the final price. 

What to expect

• Labor: Differential fluid changes are a bit more involved than an oil change and require a technician. 
• Fluid replacement: The old fluid is drained and replaced with new gear oil. 
• Potential for additional work: If the differential is failing, the cost will be significantly higher for repairs or replacement. Signs of a failing differential can include whining, howling, or clunking noises. 

How to estimate your cost

• Use an online estimator from a service like YourMechanic to get a quote for your specific truck.
• Contact local repair shops for quotes to compare prices.