04 Tahoe with 255k on the ticker. I have the 5.3 Z"flex fuel" engine. It has the typical oil leaks that most all 5.3's have. Speaking of 5.3's....where are the most common places for these things to leak from? I'm just about ready to tackle the oil leaks, getting tired of the oil burning stinky smell mess. Oil pan, valve covers, intake valley cover, rear engine cover, oil cooler block off....any other common leaks I missed in that list? I have noticed, right after an oil change that my oil level drops quicker than once the oil is a bit older. To explain better....in the first 3000 miles of oil usage, I typically have to add a quart of oil. In the last 40% on the oil monitor, or last ~3000 miles of an oil change cycle, I barely have to add half a quart. Is it typical of the 5.3 to burn thru or leak fresh, clean oil at a much faster rate than used oil that has been in a for a while? I've seen this happen repeatedly, so I think I am on to something, meaning this isn't just a one time flash in the pan. I've observed this over the last 12-18 months and 3 oil changes.