If you can't find it at Napa...
You can get it at Summit Racing website, but if you don't have a brick and morter store the cost will be substantial with shipping and you might as well get the Mopar from the dealer.
http://www.summitracing.com/parts/vlv-vv346?seid=srese1&gclid=CIX0x7WA4MQCFQcOaQodAU8AhA
Really though man, it's all the same.
Quote:
What You Need to Know About ATF+4®
In response to marketplace demands and evolving vehicle technology, Chrysler Group LLC established a licensing program for its advanced synthetic Automatic Transmission Fluid, ATF+4® in 2005. This program allows ATF+4® to be made available at retail outlets and through independent repair facilities for Chrysler®, Jeep® and Dodge® vehicle automatic transmissions.
ATF+4® is a high performance, synthetic fluid which provides significant reduction in component wear, superior temperature performance, consistent shift quality, and exceptional friction modifying properties for automatic transmissions in Chrysler®, Jeep® and Dodge® vehicles. The durability of ATF+4® has been successfully proven through more than one million miles of testing in severe environments and an intensive validation process.
"Licensing our ATF+4® product allows the millions of Chrysler®, Jeep® and Dodge® owners with vehicles on the road to receive transmission fluid that is designed exactly for their vehicle," said Dennis Florkowski, former Chrysler Senior Specialist/Supervisor. "Using ATF+4® ensures a longer transmission life with regular servicing as described in the vehicle owner's manual."
ATF+4® is approved for use in older transmissions and is currently utilized in newer Chrysler®, Jeep® and Dodge® vehicles. The previous MOPAR ATF+3® formulation was discontinued in 2005, and ATF+4® is recommended for all transmissions filled with ATF+3®. ATF+4® is fully compatible with all transmission applications where ATF+®, ATF+2® and ATF+3® Automatic Transmission Fluids are specified. Only certified ATF+4® is recommended for service of Chrysler vehicles as where ATF+4® is specified in the owner’s manual. The use of automatic transmission fluids other than ATF+4®, including those claiming to be like ATF+4®, could result in lower levels of performance, jeopardize transmission life and void warranties.
The ATF+4® Automatic Transmission Fluid formulation is exclusive to Chrysler and ATF+4® is a registered trademark. The Center for Quality Assurance monitors and publishes licensed ATF+4® brands to assist consumers in making informed decisions when purchasing automatic transmission fluid for their Chrysler®, Jeep® and Dodge® vehicles.
http://centerforqa.com/chrysler/about-atf4