Really liking the Castrol HM, on my second run of it now and will be getting a UOA on this one. Very good stuff, yes it runs on the thick side, which I like for my Jeep as well.
I've used it in two vehicles so far and not only has it been very quiet running, it remained so throughout the entire OCI. I also could see some small cleaning progress through the fill holes on both vehicles, I've not been able to say that of anything else I've tried.