Dexron 3 Vs Dexron 6 Transmission Fluids | 2022 Comparison
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What are the differences between Dexron 3 and Dexron 6? Dexron 6 contains an additive package that provides enhanced oxidation stability with improved film strength. This translates to less wear on your engine as well as increased fuel economy.
In contrast, Dexron 3 does not contain any additives of this type. The main difference is that Dexron 3 is a semi-synthetic fluid whereas Dexron 6 is fully synthetic.
Quick Overview: Dexron 3 Vs Dexron 6
| Type | Dexron 3 | Dexron 6 |
|---|---|---|
| Viscosity | Comes in the thicker viscosity | Thinner viscosity than Dexron 3 |
| Longevity | Offer long-lasting transmission | Offer higher transmission life than Dexron 3 |
| Blend | Semi-synthetic. | Fully synthetic |
| color | Red | Red |
| Compatibility | Should not replace with Dexron 6 | Compatible with Dexron 2 or 3 transmission fluid |
| Usage | Recommended for several cars and commercial vehicle automatic gearboxes | Suitable to use where Dexron II and Dexron III are recommended |
| Stability | Not much stable as Dexron 6 | A lot more stable at higher temperatures |
| Best Product | Check Here | Check Here |
To make an informed decision on the type of automatic transmission fluid for your vehicle, a sound guideline is essential. Summarized below are the main criteria used to settle on the best ATF.
What is Dexron III?
Dexron-III is a premium blend automatic transmission fluid that is specially formulated for the modern car to meet the needs of compact transmissions. Besides, it helps the vehicle to run at higher operating temperatures with electronic control.
Read Next: Best Dexron 3 Transmission Fluid Reviews
What is Dexron VI transmission fluid?
Dexron-VI is a high-performance automatic transmission fluid that is formulated to meet the tough demand of GM’s Dexron-VI specification. At the same time, it offers better protection for 2006 and the latest GM vehicles. It also provides improved performance in older GM vehicles where Dexron is specified.
Read Next: Best Dexron VI Transmission Fluid Reviews
What is the difference between Dexron III and Dexron VI?
While researching, we found plenty of differences between Dexron III and Dexron VI transmission fluid. In this section, we will discuss some key differences so you can easily choose the better one.
Durability
However, both of the Dexron transmission fluids are offered long-lasting transmission in their class, comparing between two Dex VI is a better performer. Even the useful life of Dexron VI is twice that of Dexron III. So if you are looking for a long-lasting transmission season, you should go for Dexron VI automatic transmission fluid.
Viscosity
Another key feature that makes these Dexron III and Dexron VI separate from each other is their viscosity. Dexron VI is much thinner than Dexron III transmission fluid. So it will help the engine moving part perform smoothly. Because of the thinner viscosity, Dexron VI transmission fluid is mostly suitable for cold temperatures while Dexron III is ideal for hot weather.
Usage
Dexron III transmission fluid is recommended for several cars and commercial vehicle automatic gearboxes. It is also suitable for power steering and various manual gearboxes whether ATF is specified. Conversely, Dexron VI can be used in new and old GM transmissions. Even you can use it where Dexron II and Dexron III are recommended.
Similarities between Dexron 3 vs Dexron 6
While there are exists several differences between Dexron 3 vs Dexron 6 transmission fluid, but you will find some similarities as well. Both of them come in red color. The reason is it helps to find the engine leakage easily.
On the other hand, both of the transmission fluids are synthetic blends. So these are last longer than conventional fluid if you compare. Thus you can go longer between fluid changes even without sacrificing quality lubrication.
Is Dexron 6 better than Dexron 3?
Is Dexron 6 better than Dexron 3? The simple answer is yes. Although Dexron 3 has been replacing earlier Dexron Automatic transmission fluid versions, Dexron 2, 2D, and Dexron 2E, it has been overpowered by Dexron 6.
The newest version of automatic transmission fluid by GM motors, Dexron 6, is backward compatible and is verified for mixing well with other earlier versions of Dexron.
However, Dexron 3 is neither forward nor backward consistent, thus cannot be used together with different versions of Dexron.
Dexron 6 has a conventional base stock making it a synthetic blend transmission fluid. This ATF version is specifically formulated for the new six-speed automatic machines and has a recorded higher internal tolerance.
Dexron 6 is thinner and denser than Dexron 3. Although Dexron 6 is compatible with other transmission fluids, it is advisable not to mix two transmission fluids. Stated below are the advantages of purchasing Dexron 6 over other automatic transmission fluids.
Can You Mix Dexron 3 With Dexron 6?
You should not mix Dexron-III with Dexron-VI. The reason is if you mix, it will reduce the effectiveness of Dexron-VI fluid as Dexron 3 is a less stable product. On the other hand, Dexron 6 is a far superior transmission fluid than Dexron 3.
Dexron 3 Vs Dexron 6 (FAQS)
1. Can I Replace Dexron VI With Dexron III?
You can easily use Dexron VI transmission fluid instead of Dexron III. The well-known brand GM manufactured this liquid in such a way that is compatible with transmissions requiring previous versions of the fluid. Usually, Dexron VI can work in any vehicle that needs ATF-A or a Dexron variation.
2. Is Dexron 3 The Same As ATF 4?
ATF+4 includes specific additives that are designed for specific Chrysler transmissions. Conversely, Dexron III is a conventional transmission fluid that is usually used in older Chevy transmissions.
3. Are All Dexron VI The Same?
Dexron-VI fluid comes in the complete formulation and it doesn’t need any change. Besides, its specification is so tight that you can’t find any visible difference between licensed products.
4. Can Dexron VI Replace Dexron II And III?
Yes. You can replace Dexron II and III with Dexron VI. You can use Dexron VI in General Motors domestically to import transmissions that meet Dexron II or Dexron III specifications. Besides Dexron VI is a low viscosity transmission fluid. So you should use it with the full synthetic low viscosity transmission fluid.
Final Thought
I hope your inquiries about the dilemma of Dexron 3 vs Dexron 6 have been demystified. Additionally, I hope you will make a more informed decision when purchasing the transmission fluid for your vehicle.
Also, look out for the highlighted signs of a failing transmission system. Remember that your vehicle transmission system is the most vital part of the car!
