1010 dash lights

[bobz]

hi , I'm new to this site thanks for the site, and any information that I grasp , I have a question about the oil lights . there is 2 oil lights on the left side on the dash . one under each other, the lower one stays on. I it's the reverser or eng. I think it's the reverser. the owners manual doesn't have my dash configuration . everything works hyd's and diesel motor sounds good too no knocks . I just changed the oil in the motor with w30 with 3/4 bottle of lucus oil treatment with new filter. I wouldn't think that would effect the oil light. I want to change all the filters even the one in the hyd tank . and where should I get all the filters from ? I don't like dealer prices ! I don't know what oil light is what? thanks bobz