As Far as I remember there is no way to check the fluid on the 2000 Xj8 as it is a sealed unit. You have to drain the transmission and there should be exactly four quarts. We had to make up a filling rig to install the special trans fluid. Regular ATF will destroy the trans. so it should only be done by a reputable shop.--
Steve D’Angelo, Service Technician
1994, XJS, v12, 6.0 coupe
1994, XJS, 4.0 coupe
Hills Motors, Jaguar, Rolls Royce & Bentley
4011 Pacific Blvd.
San Mateo CA 94403 MOBILE: 650.455.1110