jbancs

I have a 2002 silverado 5.3L with the old school whipple supercharger that sits off to the side of the engine. I've noticed an issue arise lately. It started by my "check engine oil level" light coming on between oil changes (always used mobile 1 5W30). I check the level and it's low enough to barely show on the dipstick. So I add a quart of oil check again and it's back to normal and the warning goes away. Now it happens regularly about every 1000-1200 miles. I am not leaking, and the truck doesn't seem to be smoking except on the rare occasion that I run the truck WOT when a small very weak cloud of smoke seems to come as soon as the truck revs high. I'm not very engine savvy, so I'm relatively clueless as to what this means. There's never any oil stains where I park, and no oil coating the bottom of my frame when I look under the truck, so I'm assuming it has to be burning the oil somehow. Anything these symptoms indicate, or anything I should look for?

Koots

Pull the PCV valve out the drivers side valve cover (closer to the firewall) and replace it. They are really cheap and is usually the cause of excessive oil consumption/leakage in gas engines.

If they aren't working properly, the engines oiling system becomes pressurized and will find it's way into or out of the engine in any way it can. When I had my PCV valve clogged up on my 02 LQ4, it caused the oil to leak around the oil filter/bypass mount, valve covers and some to be burnt in the engine. I changed my PCV valve and I went from losing 2-4L of oil per oil change to less than 1L.

sfhsghfwei

Pull the PCV valve out th e drivers side valve cover (closer to the firewall) and replace it.