When did GM switch to Dexron VI?
General Motors (GM) switched to using Dexron VI automatic transmission fluid in its vehicles in 2005. Dexron VI is a newer and more advanced formulation of the Dexron transmission fluid that GM had been using since the 1960s.
The Transition to Dexron VI
Prior to 2005, GM had been using Dexron III and Dexron III/Mercon V automatic transmission fluids in its vehicles. However, as technology advanced, GM recognized the need for a more robust and versatile transmission fluid that could handle the demands of newer, more complex automatic transmissions.
In 2005, GM introduced Dexron VI as the new standard transmission fluid for its vehicles. Dexron VI was designed to provide improved performance, better oxidation resistance, and enhanced friction characteristics compared to the previous Dexron III formulation.
Key Features of Dexron VI
- Improved Oxidation Resistance: Dexron VI has a higher resistance to oxidation, which helps to extend the fluid's lifespan and maintain its performance characteristics for longer periods of time.
- Enhanced Friction Characteristics: The Dexron VI formulation provides improved friction properties, which helps to ensure smooth and consistent shifting in automatic transmissions.
- Compatibility with Newer Transmissions: Dexron VI is designed to be compatible with the latest generation of automatic transmissions, including those with more complex hydraulic systems and electronic controls.
The switch to Dexron VI was an important step for GM in keeping up with the evolving demands of its vehicle lineup and ensuring that its customers had access to a high-quality, reliable transmission fluid.
What year did GM require Dexos?
2011
In North America, starting with the 2011 model year, GM introduced dexos 1™ certified engine oil as a factory fill and service fill for gasoline engines. The reasons for the new engine oil specification are as follows: To meet environmental goals such as increasing fuel efficiency and reducing engine emissions.
What year did GM start using dexron VI?
2005
High-Performance Synthetic Fluid Protects GM Transmissions
The Dexron VI classification was introduced for the 2005 model year and newer GM vehicles. It is also backward compatible and recommended for use in transmissions for which previous Dexron fluids were specified.
Is the 4L60E a bad transmission?
Following the pattern of race and vane style pumps of General Motors transmissions from years passed, the 4L60-E transmission is known for a variety of pump problems. These will often result in poor line pressure, high temperatures, flared shifts and other generic drivability concerns.
When did GM switch to the 6L80?
2006
The 6L80 was, from the ground up, developed as an electric over hydraulic transmission with microprocessor control. The 6L80 began manufacture in 2005 for release in 2006 model year GM vehicles, persisting until at least 2016 in both 6L80 and 6L90 versions.
When did GM switch to 4L60E?
4L60 and 4L60-E
This happened in 1993 for trucks, vans, and SUVs, and 1994 for rear wheel drive passenger cars.
When did GM stop using Vortec?
The Vortec 350 engine had a limited lifetime. Its introduction was in 1996, but GM's new-generation engine later supplanted it in 1999. Chevrolet makes use of small block Chevy Vortec heads, entirely assembled using 1.940 /1.500 valves.
Can Dexron VI be used in place of DEXRON II?
Technically, it should be ok to use Dexron VI ATF instead of Dexron II for your car. Dexron ATF Oil are made to be backward compatible.
How to tell if you have a 6L80 or 6L80E?
6L80E Transmission Identification
If the 6L80E transmission is still mounted in the vehicle, you can only identify it using its RPO tag in the vehicle's glove compartment. This is why knowing the RPO code for the transmission you want to identify is nothing short of golden.
Can you mix Dexron VI with ATF 4?
Can MaxLife ATF be mixed with Dexron VI or does the fluid need to be purged prior to installing MaxLIfe ATF? Valvoline MaxLife ATF transmission fluid is 100 percent compatible with the DEXRON VI for mixing or flushing a system.
Is Dexron 2 still available?
Dexron 2 may be less commonly stocked but is still readily available for those maintaining older GM models.
