ATF 4 Fluid is a synthetic blend automatic transmission fluid formulated by for use in Chrysler Corporation automatic transmissions and transaxles. This is compatible with all transmissions that require Mopar ATF+®, Mopar ATF+2® and Mopar ATF+3®. ATF 4 Fluid is recommended by for use in all applications specifying Mopar ATF+4® or Type MS-9602 fluid.