I have a 07 WH CRD . My build Sheet says I have a 5-Spd Auto W5J400 Transmission.
The workshop manual says to use Shell 3403 or ATF +4.
Nulon
https://www.nulon.com.au/products/au...smission-fluid SYNATF claims to be compatible with Shell LA2634, Shell 3403, Chrysler ATF+3, ATF+4
Checking if there any issues with SYNATF?