There is a small dilema here. The Owner's Manual for your Lincoln says to refer to the Maintenance schedule to find the proper interval for replacing your transmission fluid. Here is where the problem arises: The Maintenance schedule published for your vehicle says to replace the transmission fluid at 30,000 mile intervals for several transmission models. Then it "excepts" the models that are not lsted by transmission model number in the preceeding text - yours is not listed.
Then, when I go to the service manual and search by your vehicle (2000 Lincoln LS) it says to replace the transmission fluid at 30,000 mile intervals without any exceptions.Here is what I recommend to my customers:
CHECK the fluid every 30,000 miles and REPLACE the fluid and filter every 60,000 miles. I have found that this works for almost every make and model out there. I have several customers with over 300,000 miles on their cars that have never had transmission overhauls.
For free PDF version downloads of both the Owner's Manual and the Maintenance Schedule (3rd printing) for your vehicle, click the links below.2000 Lincoln LS Owner's Manual2000 Ford-Lincoln-Mercury Maintenance Schedule (3rd Printing)