I posted a while back about oil leak issues..... I still got them and I am not going to get the gaskets fixed... I am searching for a new (used) silverado.... but I am posting this so other frustrated Silverado owners can see this mess... Clearly an oil leak: And then combine that problem with this: (Ashe deposits on the spark plugs)..... Those were put in at 180,000 and I am at 226,xxx. Burning a little oill huh? Between the "leak" and the burning I go though 2 quarts every 4-6 weeks to top off this (Otherwise "good") (sarcasm) well designed GM engine. And no, I am not just blowing smoke... you can read all over the place that the 5.3L is a ***** when it comes to oil issues long term. (I wish I knew this before buying the truck). This truck came with 100,000 mile tune up advertised everywhere from GM... I am glad I have been replacing plugs and cables about every 80,000 miles, but the plugs are this bad after 56,000 miles? Wet oil on the spark plug? Really GM? I also do my oil changes every 3 months/3,000-4,000 miles.