shibby1485

interesting you say that. mine first did it around 28-30k.... if i park inclined nose down that's only time i get lifters slapping away in the morning if i'm low on oil. if i park inclined nose up, then i'm more apt to get a smokey start-up. a trend i've noticed if of any relevance... my smokey start-ups, CLOUDY smokey start-up like it's the 1970s.... it's not just a little bit of smoke.... would that mean more likely valve seals for oil to get in the top end when sitting cold...

never researched the issue much, but it's been happening to me for awhile now.... decided to google the issue and this topic came up. haven't been an avid forum member just little time in life.. anyway... i have a 2008 AFM 5.3" 4WD Silverado... i did an oil change at 3,000 miles when new and changed to mobile 1 and have used it ever since at 7500 intervals every once in awhile, maybe once a week starting around 20k miles, it would puff a cloud of smoke at start-up, hmm. never paid attention much to it, alot going on in life at 30,000 miles one morning, i start the car to go to work and holy $hit!! tapping knocking noises very loud scared me thought my truck was junk. 5-7 seconds later it went away. drove the truck to work, checked the oil, wasn't even showing on the stick! so i drained out the oil and did an oil change, i was about due anyway. topped it off, new filter.... rode around for a day checked level all OK no noises... still occassional puff of smoke at start-ups... a cloud rather. now every 3-4 thousand miles i get the tap and check the oil and its empty... happened at 33,xxx.... happened at 36,500... and happened again 2 days ago i'm at 40,500 miles currently got a real good puff of smoke the other morning my neighbor even looked at me funny as the cloud of blue stinky smoke drifted across the street.. i added 2.5 quarts of oil to bring the level to the proper point on the stick... the oil consumption issue really took off strong on my truck somewhere in the late 20k range until now at 40k. never a sign of it for the first 2 years 25k miles. my mods are as listed in my sig. air intake and exhaust. i do all service myself it's never been back to a dealer since i bought it (i'm a marine mechanic and powersports enthusiast) the contractor that neglects his house, i'm the mechanic that neglects this issue with my truck