Clear it and see what it does, you might need a valvebody or a conductor plate. The earlier .6's had no covers over the soliniods and would short on occasion. The reason it has no dipstick is that it uses a special synth. fluid that is not readily available. I honestly dont know if the aftermarket has caught up with this one yet. As a former dealer line tech I'd recomend servicing this unit every 60k and at 130k you might have gotten all the life out of this unit.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.