New Owner Coolant Leaking Out of Cap

I’m sure there’s a thread out there somewhere that would answer my question but there’s just so many and I don’t know where to start. I’ve owned my 6.0 for about 3 to 4 months and have experienced coolant leaking out of my degas bottle cap. The guy I bought it off of told me it was studded and deleted and I went out on a whim and believed him which I know is dumb. I’ve come to the realization that I’m pretty sure it isn’t. I’ve kind of read about it I replaced my cap and it stopped for a little bit but I checked it today and it’s leaking again. Can I just be overfilling my degas bottle? i’ve heard it can be my head gasket but I recently changed the oil and there is no coolant in it and there is no white smoke coming out of my exhaust I’ll double check tomorrow to check whether it is Studded/Deleted. I would greatly appreciate any advice and help.