Question: is atf plus 4 synthetic?
Answer: 1. ATF+4 is a Mopar (Dodge, Jeep, Chrysler) spec fluid, most often used in their automatic transmissions, and also power fluid systems, and transfer case units. ATF+4 is a full synthetic fluid and exceeds the requirements of ATF+3, a semi-synthetic formula, according to the parts counterman at a local Jeep dealership.