I have a few questions about a 940 E i've been working on. The previous owner seemed to have neglected some of the regular maintainence amazed it was running as good as it was, never saw an air or fuel filter gunked up so bad. So I'm changeign out all the fluids and all new filters, and new fuel lines to fix up some fuel leaks. 1.Where is the second hydraulic filter at? It lists it as having 2 filters found the obvious one in the back couldnt find a second one. 2.it looks like it was once equiped with Auxillary hydraulic, two capped off lines in the back on the right side of the engine and on the spool valves iit look like there should be a lever or somthing attache to the bottom (3rd) valve and there is nothing there anymore. So did the 940e's come with auxillary hydarualics? if so 3. What would be the best way to get the Aux hydraulics back? 4.What is the easiest way to figure out the year of my 940E? Thank you for any and all help.