1st to 2nd shift
But you might get lucky--adjust the linkage and change out the fluid to Amsoil or Redline. As 01TT225 sez, the oil change procedure is in the FAQ. You might need a Bentley for the linkage adjustment procedure, although it only takes 5-10 mins. If you don't have a Bentley, check DieselGeek's webpage; I think he has a good procedure, with pics, which can be adapted for the OEM linkage adjustment.
~john



