So I've been having difficulty finding the proper oil and I think I have the correct stuff but I want some input before I drain the old oil. So it started at NAPA I asked for the transmission oil for my NV4500 in my 1999 ram 2500. The oil I was given was part number 04874464ab. I immediately found this fishy as on the front of the bottle is says for the NV3500 and NSG-370. I got NAPA to call back the dealer that they got it from and they insisted that this is the correct oil. I did some research