Long time lurker here and this is my first post. I was changing the oil in my 2011 Ram 1500 this morning and noticed that the oil in the 5 qt jug was substantially darker and felt slightly thicker than what was coming out of the 1 qt bottles. As per human nature I smelled it, it smelled the same, only thing is the previously mentioned differences. Anyone ever notice something like this before? The bottles had never been opened and the labels all say 5w/20. I can't say that I have ever noticed this before but maybe I was just paying a lot more attention this morning. Anyway, I love this site and I tell everyone I know that cares about such things about it.