Valvoline DEX/MERC Automatic Transmission Fluid 1 qt — Case of 6, Anti-Shudder & Low-Temp Flow

Valvoline DEX/MERC ATF is a premium automatic transmission fluid engineered to protect and condition transmissions specified for DEXRON and MERCON applications.

This Valvoline DEX/MERC Automatic Transmission Fluid comes in 1-quart bottles sold as a case of six. It's blended from high-quality base stocks and modern additive chemistry to deliver dependable low-temperature flow, anti-shudder protection, and wear reduction for a wide range of automatic transmissions and transaxles. Formulated to meet legacy GM DEXRON and many Ford MERCON specifications, it serves as a service-fill option where these specifications are recommended.

Which vehicles and transmission specs does this fluid support?

This ATF is intended for older GM and many Ford passenger cars and light trucks, plus various import vehicles that call for DEXRON or MERCON type fluids. It's suitable for pre-2006 General Motors transmissions and Ford models from post-1981 to pre-2007 unless a specific MERCON-V or MERCON-SP grade is required.

• Compatible with DEXRON, DEXRON-II, DEXRON-III service recommendations
• Acceptable for many Ford MERCON, M2C138-CJ, and M2C166-H service fills
• Also compatible where Allison TES-389 is requested for lighter duty applications
• Not a substitute where modern MERCON-V or MERCON-SP is explicitly required

How does Valvoline DEX/MERC protect shifting performance?

The formulation includes friction modifiers and anti-shudder additives that help preserve smooth clutch engagement and consistent shift feel. By maintaining stable friction characteristics across a range of temperatures, it reduces the chance of shudder and improves driveability.

• Enhanced anti-shudder package for smoother gear changes
• Friction stability supports consistent shift timing and feel
• Low-temperature fluidity helps quick engagement in cold starts

What durability benefits and temperature performance can I expect?

Valvoline engineered this ATF with anti-wear additives and a balanced base oil blend to help protect gear teeth, bushings, and clutch surfaces from excessive wear. The fluid maintains a protective film at higher operating temperatures while offering improved flow when cold, extending component life and improving protection under varied driving conditions.

• Anti-wear chemistry to reduce metal-to-metal contact
• Stable film strength at high temperatures for component protection
• Good low-temperature pumpability for faster system protection on startup

How should I use this 1-quart case for service and maintenance?

Each 1-quart bottle lets you top off or replace fluid in partial drains, while the six-bottle case is convenient for complete drains on most transmissions or for multiple service jobs. Always follow the vehicle maker’s capacity and service procedures, and confirm the required ATF specification before refilling.

• Use one or more quarts to top off or during partial fluid changes
• Case of six is handy for full transmission fills or multiple vehicles
• Verify vehicle-specific spec and capacity before installation

Who this is for: Mechanics, fleet operators, and DIY enthusiasts maintaining older GM, Ford, and compatible import vehicles who need a dependable DEXRON/MERCON-type fluid. It's ideal for routine service, repairs, or prepping a vehicle for continued reliable shifting where original equipment calls for DEXRON or comparable MERCON specifications.