![]() ![]() Since Dexron 3 is used in older applications and Dexron 6 is “backwards compatible” GM suggests that you can use Dexron 6 in most Dexron 3 applications.ĭepending on your situation, it would be best to use one or the other in your transmission. In many cases, yes, Dexron 6 can be mixed with Dexron 3. Since Dexron 6 is backwards compatible, you can use it in Dexron 3 applications.ĭexron 6 has a lower fluid viscosity than Dexron 3, but can be used in Dexron 3 applications. ![]() Dexron 6 has more up to date fluid properties which allows for a longer fluid life and is much better at dealing with higher temperatures. The main difference between Dexron 6 and Dexron 3 is that Dexron 6 is classified as a synthetic fluid and Dexron 3 is not. What Is The Difference Between Dexron 3 and Dexron 6? The below transmission fluid chart shows how long transmissions last when fluid reaches various temperatures. This common range is best for longevity of both your transmission fluid and transmission itself. Like all transmission fluids, Dexron 6 is best when it’s temperature is between 160-200 degrees F. In most cases, reading the transmission dipstick will give you and idea how much fluid you need when you do routine maintenance. The amount of Dexron 6 transmission fluid needed for your application varies, so it is best to consult your owner’s manual. GM started to use Dexron 6 in factory vehicles starting in the 2006 model year. What Year Did Dexron 6 Come Out?ĭexron 6 transmission fluid was introduced in 2005 as Dexron VI and replaced its predecessor, Dexron 3. What Transmission Fluid Replaced Dexron 6?ĭexron VI is still very common in many applications, General Motors has updated the specifications since its inception with Dexron ULV and Dexron HP. If you are in a pinch and can’t wait for factory recommended Ac Delco Dex 6, you can always go to your local auto parts store to find a suitable aftermarket replacement. If you cannot find Ac Delco Dex VI, there are plenty of aftermarket fluid manufactures who offer Dexron 6 that meet factory specifications. Since all Ac Delco is factory specified and is still supported by General Motors, it is the most recommended Dexron 6 transmission fluid. In our opinion, the best Dexron 6 transmission fluid is AC Delco. Learn More Dexron 6 Transmission Fluid Questions Is Dexron 6 Discontinued?ĭexron 6 is not discontinued and it still readily available and easy to get. ![]()
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