where can I find...
I have only recently begun to do anything with my vehicles beyond putting gas in it, driving it, checking the oil, tire pressure, and fluids. So you'll have to forgive me if I sound/am ignorant.
I have a 1994 Ford F-150xl V8 5.0. I know that the last time the differential fluid was checked it was noted to have a leak but was filled. I am sure that it needs to be filled (as that was a while ago). My question is: should I go ahead and change the fluid in it (as it seems fairly similar to an oil change which I can do) or just put more into it? And where do I find out the recommended oil for it? I looked in my owner's manual and here online and I could not find it.