DEXRON III transmission fluid is a type of automatic transmission fluid used in General Motors vehicles. It is also recommended for use in other makes and models of vehicles.
If you are looking for a DEXRON III transmission fluid equivalent, there are several products that you can choose from.
By the end of 2006, all DEXRON-III licenses had run out and would not be renewed. After that date, General Motors will only support the use of DEXRON-VI fluids.
DEXRON III Equivalent
ACDelco Dexron VI Full Synthetic ATF is backward compatible with previous Dexron fluids and can be used as a replacement in older vehicles/transmissions. It outperforms previous Dexron fluids in friction durability, viscosity stability, aeration and foam control, and oxidation resistance – meaning you could see improved fuel economy and longer transmission life. Plus, its synthetic formulation allows for extended drain intervals, making maintenance easier on you.
Mobil 1 Synthetic LV ATF HP is an advanced full synthetic automatic transmission fluid that is specially designed to extend your transmission’s life. The high-performance formula protects your automatic transmission in all conditions and is formulated from synthetic base oils and an advanced additive system. This fluid provides maximum protection and performance for your transmission and is the perfect choice for those who demand the best for their vehicle.
On October 1, 2018, a new fluid requirement (GMNA-9986555) was published for the “Dexron Approved” Mobil 1 Synthetic LV ATF HP. This updated fluid was first presented in GM Technical Service Bulletin 18-NA-355 in December 2018. The change is to aid eliminate torque converter clutch shudders in the GM 8L90 and 8L45 automatic transmissions after a complete system flush. [source]
Is DEXRON 6 Compatible With DEXRON 3?
The expiration of DEXRON-III licenses in 2006 has led to many questions about the compatibility of DEXRON-VI fluids with DEXRON-III fluids. The answer is yes; DEXRON-VI fluids are compatible with DEXRON-III fluids.
DEXRON-VI fluids can replace DEXRON-III fluids in any vehicle that requires DEXRON-III fluid, including all GM vehicles manufactured after 2006.