Red Line Synthetic Automatic Transmission Fluids deliver exceptional performance across extreme temperature ranges, providing superior low-temperature shiftability and enhanced thermal stability compared to conventional petroleum-based fluids. These fully synthetic formulations offer significantly lower volatility, faster cold-weather shifting, and balanced frictional characteristics that ensure smooth, consistent shifts throughout extended drain intervals.
D6 ATF - Universal Modern Transmission Fluid
Recommended for applications requiring Dexron-VI, Ford Mercon SP, Toyota WS, and Mercedes Benz NAG-2 specifications. This shear-stable, low-viscosity formula is engineered for late-model automatic transmissions demanding consistent performance.
- Most shear-stable formulation for consistent long-term operation
- Outstanding low-temperature shiftability in automatic and manual transmissions
- Satisfies API 70W/75W GL-4 gear oil requirements
Synthetic ATF - Classic Dexron/Mercon Applications
Approved for GM Dexron II, Ford Mercon, and Mercedes Benz automatic transmissions. Ideal for vehicles specifying Dexron IID, Dexron IIE, or Mercon fluids. Superior thermal stability prevents valve and clutch varnishing during high-temperature operation.
D4 ATF - Most Versatile Formula
The most popular Red Line ATF, suitable for Dexron III, Dexron II, and Mercon specifications. This fully synthetic fluid meets the enhanced low-temperature requirements of Dexron IV and improved shear-stability standards of newer Mercon specs. Provides GL-4 level gear protection, making it excellent for performance applications like the Corvette T-56 transmission. Delivers balanced friction characteristics for smooth shifting and prevents high-temperature varnish buildup.
Racing ATF - Competition Performance
Designed for racing automatic transmissions requiring Type-F fluid characteristics. Contains no friction modifiers for faster, more positive shifts and quicker torque converter lockup, potentially reducing drag racing elapsed times. Higher viscosity maintains torque converter efficiency at elevated temperatures, while extreme-pressure additives provide five times better film strength than petroleum ATFs. Also suitable for manual transmissions requiring ATF.
C+ ATF - Chrysler Applications
Meets Chrysler Types 7176 and ATF+4 (Type 9602) specifications while delivering 30% greater operating viscosity and one-third the evaporation rate of petroleum ATFs. Provides precise frictional characteristics to prevent torque converter shudder and harsh shifting. Exceptional low-temperature performance allows proper shifting down to -60°C, making it the ideal choice for Chrysler automatic transmissions and transaxles.
High-Temp ATF - Heavy-Duty Protection
A synthetic ATF with GL-4 gear oil protection for heavily-loaded vehicles requiring Dexron III or Mercon fluids. Higher viscosity at operating temperature allows transmissions to run 70°F hotter while maintaining optimal shiftability and torque converter efficiency. Features evaporation rates twice as good as standard synthetic ATF and five times better than petroleum fluids, significantly reducing foaming through the filler tube. Suitable for both automatic and manual transmissions, though MTL provides superior performance in most manual applications.
All Red Line ATF formulations prevent transmission failure by resisting high-temperature varnish formation on valves and clutches, ensuring reliable performance and extended service life.