ATF+4 Transmission Fluid

Released in 1998, Chrysler released its ATF+4 material standard transmission fluid which is an extra high viscosity index (XHVI) group 3 base oil. ATF+4 was designed to outlast and outperform the previous ATF+3, and was introduced for model year 1999. 

Chrysler considers ATF+4 a “fill for life” transmission fluid, and is backwards compatible with previous Chrysler designed fluids including: 

  • ATF+3
  • ATF+2
  • ATF+ 

In 2003, Chrysler updated the ATF+4 fluid material standard from MS-9602 to MS-6906 in an effort to utilize the fluid for newly developed 6 speed automatic transmissions.

ATF+4 Transmission Fluid Questions

Is ATF+4 Synthetic?

ATF+4 is considered a synthetic transmission fluid 

What Is The Best ATF+4?

In our opinion, the best Dexron 6 transmission fluid is AC Delco.  Since all Ac Delco is factory specified and is still supported by General Motors, it is the most recommended Dexron 6 transmission fluid. 

If you cannot find Ac Delco Dex VI, there are plenty of aftermarket fluid manufactures who offer Dexron 6 that meet factory specifications.  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.

What Transmission Fluid Replaced Dexron 6?

Dexron VI is still very common in many applications, General Motors has updated the specifications since its inception with Dexron ULV and Dexron HP.

What Year Did ATF+4 Come Out?

Dexron 6 transmission fluid was introduced in 2005 as Dexron VI and replaced its predecessor, Dexron 3. GM started to use Dexron 6 in factory vehicles starting in the 2006 model year.

How Much ATF+4 Do I Need?

How much ATF+4 transmission fluid you need is highly dependent on your application. As always, it is best to consult your owner’s manual. 

In most cases, looking at the level on the transmission dipstick will tell you how much you need after you do routine maintenance or are just checking transmission fluid levels

What Temperature Does ATF+4 Fail At? 

Like all transmission fluids, ATF+4 operates best between 160-200 degrees F. This common range is best for longevity of both your transmission fluid and transmission itself. 

The below transmission fluid chart shows how long transmissions last when fluid reaches various temperatures.

Transmission Fluid Temperature Chart

What Is The Difference Between ATF+4 and Dexron Mercon (Dex/Merc)?

The main difference between ATF+4 and Dex / Merc is that ATF+4 is a Mopar specific fluid whereas Dex/Merc is a more universal fluid used in a number of applications.

ATF+4 is a synthetic transmission fluid and Dexron / Mercon is not.  The two fluids have different design specifications as well

Can ATF+4 Be Mixed With Dexron 6? 

No, ATF+4 and Dexron 6 transmission fluids should not be mixed. Both ATF+4 and Dexron VI are designed for use in specific applications, it’s best to use what your vehicle’s transmission calls for.  

With ATF+4 being a Mopar fluid and Dexron VI being a GM based fluid, the two should only be used in their designated applications.

What Happens If You Put ATF+4 In A Dexron 6 Transmission?

If ATF+4 is used in a transmission that calls for Dexron 6, the transmission may not run right.  While the two transmission fluids are used in a number of applications,  it’s best recommended to use one or the other for the best results. 

What Color Is ATF+4?

ATF+4 transmission fluid is a bright red when new and should be a similar color if your transmission is maintained properly. 

The below transmission fluid color chart shows common transmission fluid colors depending on use and give you an idea of what to look for over time. 

Transmission Fluid Color Comparison - Transmission Cooler Guide

Can ATF+4 Be Used In All Automatic Transmissions?

ATF+4 is a common Mopar specific transmission fluid (Dodge, Ram, Chrysler, Jeep), but is not recommended for use in all automatic transmissions.

It’s always best to consult your vehicle’s owners manual to learn what transmission fluid is recommended for your application.

Can ATF+4 Be Used As Power Steering Fluid?

Yes, it is common for transmission fluids such as ATF+4 to be used as power steering fluid.  The two fluids are similar and both work in power steering systems.  In fact, some vehicles call for ATF+4 to be used as their power steering fluid.

Where Can I Get ATF+4?

ATF+4 is easy to find both online and at local auto parts stores. Because of this, you can quickly get as much as you need. There are plenty of aftermarket options as well as buying Mopar specific ATF+4 from a local dealership or online.

How Much Does ATF+4 Cost?

With ATF+4 being easy to get and readily available both online and at auto part stores, the cost is not high, but may be more than other transmission fluids.   

ATF+4 is a full-synthetic transmission fluid specifically engineered to protect and prolong the life of (FCA) Fiat Chrysler automatic transmissions.  It is officially licensed and approved by FCA and is fully back-serviceable and can be used wherever ATF+3, ATF+2 or ATF+ is specified.

Recommended for use in the following applications: Mopar ATF+ MS 7176, ATF+2 MS 7176, ATF+3 and ATF+4.

Product Features:

Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions. Enhanced anti-shudder protection for smooth shifting and maximum power transfer. Developed with anti-wear technology to help improve transmission durability.

Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures.