How many quarts of fluid does an Allison transmission hold?
An Allison transmission typically holds between 12 to 24 quarts of fluid, depending on the specific model and application. The exact fluid capacity can vary, so it's important to consult the owner's manual or manufacturer specifications for the exact fluid capacity of a particular Allison transmission.
Allison Transmission Fluid Capacity Explained
Allison transmissions are known for their durability and reliability in a variety of heavy-duty applications, such as commercial trucks, buses, and off-highway vehicles. The fluid capacity of an Allison transmission is an important consideration, as the transmission fluid plays a crucial role in lubricating and cooling the internal components, ensuring smooth operation and long service life.
The fluid capacity of an Allison transmission can range from as little as 12 quarts for smaller models up to 24 quarts or more for larger, heavy-duty applications. This variation in capacity is due to the different sizes and configurations of Allison transmissions, which are designed to meet the specific needs of different vehicles and applications.
Factors Affecting Allison Transmission Fluid Capacity
Several factors can influence the fluid capacity of an Allison transmission, including:
- Transmission Model: Different Allison transmission models, such as the 1000, 2000, 3000, and 4000 series, have varying fluid capacities based on their size and complexity.
- Vehicle Application: Allison transmissions used in commercial trucks, buses, or off-highway equipment may have different fluid capacities compared to those used in lighter-duty applications.
- Transmission Configuration: Allison transmissions with additional features, such as retarders or power take-off (PTO) units, may require more fluid to accommodate the additional components.
- Fluid Type: The type of transmission fluid recommended by Allison, such as Allison TES-295 or TES-389 fluid, can also affect the overall fluid capacity.
It's important to always refer to the specific owner's manual or manufacturer recommendations for the correct fluid capacity and type for a given Allison transmission model and application.
What is the capacity of the Allison 4000 transmission?
The 4000 Series™ is ideal for heavy-duty vehicles that require substantial power and torque. It can accommodate engines with power ratings ranging from 380 to 800 horsepower (283-597 kW) and torque capacities up to 2,360 lb-ft (3,200 N·m).
How many quarts of transmission fluid does an Allison take?
Allison transmission oil capacity varies by model and service type, so always check your vehicle's manual for the exact amount. For a standard fluid and filter change, a 1000/2000 series transmission typically requires about 7.4 quarts, while a 3000/4000 series transmission requires about 19 quarts (excluding external lines and cooler). A full fill capacity will be higher than a partial fill, so final verification should always be done by checking the dipstick with the engine running at operating temperature.
Approximate capacities for common Allison transmissions
- 1000 and 2000 Series: A standard fluid and filter change usually requires around 7.4 quarts, though the total fill capacity is closer to 13 quarts.
- 3000 Series: A standard fluid and filter change (3000 RDS) requires about 19 quarts, not including external lines and the cooler.
- 4000 Series: A standard fluid and filter change (4000 Series) requires about 28-30 quarts.
- Filter only: For a main filter change only, the fluid loss is approximately 1 pint (0.47 liters) for 1000/2000 series and 2 quarts (1.9 liters) for 3000/4000 series transmissions.
Important considerations
- Check your manual: The final fluid capacity depends on the specific vehicle configuration and the presence of external lines and coolers. Always consult your vehicle's owner's manual or a service guide for the exact amount.
- Fluid level check: Always verify the final fluid level with the engine running at operating temperature. It is normal for the dipstick reading to be low until the transmission fluid circulates through the system after the initial fill.
- Fluid type: Use only Allison-approved fluids, such as those meeting the TES 295 or TES 389 specifications. For 10-speed transmissions, the recommended fluid is Dexron ULV.
What kind of fluid does a Allison 3000 transmission take?
The correct fluid for an Allison 3000 series transmission is an Allison Approved TES 668™ transmission fluid, which is the latest specification and replaces older fluids like TES 295®. It is crucial to use a fluid that meets this specification to ensure optimal performance and to follow the extended drain intervals and maintenance recommendations provided by Allison Transmission.
Recommended fluid
- Allison Approved TES 668™: This is the current standard for Allison 3000 series transmissions and is a full synthetic fluid designed for enhanced durability and performance.
- Supersedes previous specifications: TES 668™ replaces older fluids like TES 295® and is fully backwards compatible with them.
- Backwards compatibility: It is safe to mix TES 668™ with fluids that have previously met the TES 295®, TES 389®, or TES 468® specifications.
Important considerations
- Avoid non-approved fluids: Using non-approved fluids can lead to durability issues, performance problems, and may invalidate the transmission's warranty.
- Source carefully: Only purchase TES 668™ fluid from Allison's approved fluid marketers or authorized distributors.
- Check the manual: Always consult your specific transmission's owner's manual for the most accurate and detailed fluid and maintenance recommendations.
- Older vehicles: While TES 668™ is recommended, if you have a very old vehicle, you may need to use a fluid that meets older specifications or the manufacturer's recommendation at the time the vehicle was built.
What is the capacity of the Allison 3000 transmission?
3000 Series™ transmissions can accommodate engines with power ratings ranging from 210 to 450 horsepower (157-336 kW) and torque capacities up to 1,250 lb-ft (1,695 N·m). These transmissions can support a GVW of 98,100 lbs. (44,500 kg).
