You're welcome.
I guess its a "Cummins thing"?
I have two oil fills on the Cummins in my truck, also - - one on top of the valve cover, the other down in front of the gear that drives the injection pump.
I always just use the "top one" on everything - it's easier to hold the funnel.
I suppose the one on the side is so you can add oil without popping the hood open?
Just one dipstick - - don't overthink this, LOL!
I check my engine oil once every 25 hours - it doesn't use a drop.
LincTex....You seem pretty knowlegable on tractors. My Branson 2100, according to my service manual, says the lifting capacity is supposed to be approx. 1450#. We just had hurricane come through Fl. Friday, and had 3 trees come down. After cutting up these trees, into 6 foot lenghths, putting about 500-600# with the bucket loader it won"t pick them up. If I lighten the load, to about 400#, it works fine. All other hydraulics work fine..I was thinking of replacing the filter for the hydraulics, because it might be getting plugged up. The hydraulics levels seem to be fine, and there isn"t any leaks. Do you have any suggestions? Thanks......Bob