2001 Jaguar S-Type Transmission Service

THe transmission in my car was a new Jaguar out-of-the-box under extended warranty at 40,000 miles. It now has 48,000 miles on it and I would like to service the unit. The Jaguar ATF was Jaguar #JLM-21044 an ESSO product imported from France that sells for $35 per litre at the dealer. The shop that will do the service normally uses Wolf'shead Universal synthetic ATF. Must I stay with the ESSO....use the Wolf'shead....Mobil 1 synthetic ATF...or perhsaps Mogtorcraft Mercon V since the transmision was built by Ford in Bordeau, France?

Thanks,

Scott
Fresno, CA