Automatic transmission fluid (ATF) is a critical component for the smooth operation and longevity of your vehicle’s transmission. Among the many types available, ATF 4, also known as ATF+4, is specifically formulated to meet the performance requirements of many Chrysler, Dodge, Jeep, and Ram vehicles.
This guide will help you understand ATF 4 and highlight the five best options available, including their features.
Best ATF 4 Transmission Fluid
1. Mopar ATF+4 Automatic Transmission Fluid
This is the original equipment manufacturer (OEM) fluid for Chrysler, Dodge, Jeep, and Ram vehicles requiring ATF+4. It is factory-approved and designed to provide the best performance for these transmissions.
Key Features:
- Meets ATF+4/MS-9602 specification
- Fully synthetic for long-lasting protection
- Ensures smooth shifting and optimal performance
- Excellent thermal and oxidation stability
- Compatible with older ATF+2 and ATF+3 systems
This is the best choice for anyone looking for factory-level performance and reliability.
2. Valvoline ATF+4 Full Synthetic Automatic Transmission Fluid
Valvoline ATF+4 is a high-quality aftermarket alternative that meets OEM requirements. It is widely used for both DIY maintenance and professional servicing.
Key Features:
- Full synthetic formula with advanced additives
- Meets or exceeds ATF+4 specifications
- Provides smooth gear shifts and reduces wear
- Performs well in high and low temperatures
- Available in single quarts or multi-quart packs
Valvoline ATF+4 offers an excellent balance of quality and value.
3. Castrol Transmax ATF+4 Automatic Transmission Fluid
Castrol Transmax ATF+4 is a premium full synthetic ATF designed for Chrysler vehicles. It is known for its reliability and durability.
Key Features:
- Full synthetic formulation exceeding ATF+4 requirements
- Protects against wear and extends transmission life
- Maintains smooth shifting under various conditions
- Performs well in both hot and cold climates
- Suitable for fleet or heavy-duty use
This fluid is ideal for vehicles used in demanding conditions or towing.
4. Mopar ATF+4 Multi-Quart Packs
For those who need to service multiple vehicles or do frequent changes, Mopar ATF+4 is available in multi-quart packs. These provide the same OEM-level protection in bulk.
Key Features:
- OEM-approved fluid in larger quantities
- Cost-effective for multiple fluid changes
- Same benefits as individual bottles
- Useful for fleet owners or frequent maintenance
Multi-quart packs are practical for professionals and vehicle owners who perform regular transmission servicing.
5. Alternative ATF 4 / ATF-4 Fluids
Some high-quality alternative ATF 4 fluids meet the same specifications as branded options but are more budget-friendly. These can be used for top-offs or older vehicles.
Key Features:
- Designed to reduce wear and provide smooth shifts
- Enhanced performance compared to conventional ATF
- Suitable for a range of automatic transmissions
- Affordable option for routine maintenance
These alternatives are a good choice if cost is a consideration and exact brand preference is less important.
How to Choose the Right ATF 4 Fluid
To ensure you get the best results from your transmission, follow these guidelines:
- Check your owner’s manual: Verify that your vehicle requires ATF+4 fluid.
- Look for certification: Make sure the fluid meets ATF+4/MS-9602 specifications.
- Prefer full synthetic: Synthetic fluids provide better heat resistance and longer service life.
- Choose the right container size: Single quarts are sufficient for top-offs, while bulk packs are better for multiple vehicles or full changes.
- Consider driving conditions: Heavy towing, high temperatures, or frequent stop-and-go driving may benefit from premium synthetic fluids.
What is ATF 4 Transmission Fluid?
ATF 4 is an automatic transmission fluid designed to meet the higher performance needs of many Chrysler-built vehicles. It meets the ATF+4 specification, also known as MS-9602, and is fully synthetic. ATF 4 provides:
- Improved thermal stability
- Excellent oxidation resistance
- Superior anti-wear protection
- Compatibility with older ATF+2 and ATF+3 systems
Choosing the correct ATF fluid is essential because the wrong type can cause poor shifting, increased wear, overheating, and even transmission damage.
Why Choosing the Right ATF 4 Matters
Automatic transmission fluid is more than just lubrication. It:
- Provides hydraulic pressure to engage clutches and bands
- Cools transmission components
- Prevents wear and protects seals
- Ensures smooth shifting under all conditions
Using a fluid that meets ATF+4 specifications is critical for vehicles that require it. While some older ATF types may work in a pinch, only ATF 4 provides the long-term protection and performance that modern transmissions need.
FAQs
Is Valvoline ATF 4 any good?
Yes, Valvoline ATF+4 is a high-quality full synthetic fluid that meets ATF+4 specifications. It provides smooth shifting, excellent wear protection, and performs well under both high and low temperatures. It is a reliable aftermarket alternative to OEM Mopar ATF+4.
Which ATF fluid is the best?
The best ATF fluid depends on your vehicle’s manufacturer recommendation. For vehicles requiring ATF+4, OEM Mopar ATF+4 is considered the safest choice. High-quality aftermarket options like Valvoline ATF+4 and Castrol Transmax ATF+4 are also excellent choices, offering similar performance and protection.
Who makes ATF 4 for Mopar?
Mopar ATF+4 is produced by Mopar itself, which is Chrysler’s official parts and fluids brand. It is factory-approved and meets all ATF+4/MS-9602 specifications required for Chrysler, Dodge, Jeep, and Ram vehicles.
How often should ATF 4 be changed?
ATF+4 is designed for extended service life, but most manufacturers recommend changing it every 60,000 to 100,000 miles, depending on driving conditions. Heavy towing or severe driving conditions may require more frequent changes. Always refer to your vehicle’s owner’s manual for the specific interval.
Is all ATF+4 the same?
Not all ATF+4 fluids are identical. While all fluids labeled ATF+4 meet the basic specification, differences exist in additives, thermal stability, and base oil quality. OEM Mopar ATF+4 ensures factory-level performance, while some aftermarket options may vary slightly in performance or longevity.
Which is better Motul or Valvoline?
Both Motul and Valvoline produce high-quality ATF+4 fluids. Valvoline is widely available and recognized for reliability and smooth shifting. Motul is known for premium formulations and may offer slightly better thermal and oxidation resistance. Either brand can be suitable as long as it meets ATF+4 specifications.
What is the difference between Dexron and ATF 4?
Dexron is a type of automatic transmission fluid originally developed by General Motors. ATF+4 is formulated specifically for Chrysler vehicles and is not compatible with Dexron fluids in systems requiring ATF+4. Using Dexron in a transmission designed for ATF+4 can cause shifting problems and potential damage.
Final words
Selecting the right ATF 4 transmission fluid is essential for the performance, reliability, and longevity of your vehicle’s transmission. OEM options like Mopar ATF+4 provide factory-level protection, while Valvoline and Castrol offer high-quality aftermarket alternatives.
Multi-quart packs and budget-friendly alternatives are also available depending on your needs. Always choose a fluid that meets ATF+4 specifications and follow your vehicle manufacturer’s guidelines for the best results.
