BrassMonkey

I would also have to agree w/this. I think every other oil change I end up having to add about a quart every few thousand miles, but that's the sum of it. My '08 has 90K on it w/no majors issues (no knocking, no ticking, no abnormal noises). It's been reported on for several years that the 5.3L is the workhorse of GM, and by far one of their most successful engines to date. The GM fleet couldn't move w/out the 5.3. I would imagine for some of our north-of-the-border members that the 4.8 is more popular (I'm not an expert, so i can't say if they rate better in the cold than it's sibling motors), but in the States the most sold GM truck engine by far is the 5.3.