Keep driving it a little longer. I work where we have fleet vehicles. They just bought about 7 or 8 brand new Colorado diesels. Put them in service and someone happened to check their oil after driving it a couple of weeks, it was 3 quarts low. In a panic they check them all, they were all using oil, a lot of oil. The GM people said keep driving them and keep and eye on the oil level. They are getting better. You would think in this day and age, with all the experience we have building engines, that the factory could do better than this.
Just trying to make you feel better about it.
There is a procedure people use to help seat the rings on a new engine. Get the engine warmed up, get out on a deserted stretch of road, get the truck going about 20 or 30 mph, and then floor the throttle till you get up to the speed limit, around 60 mph or so. Let off and let it slow down again and then full throttle it again. Do this about 10 times and then see if there is any difference.
They claim the full throttle will put lots of compression gas behind the rings and push them out to the cylinder walls and help them seat. But you don't want to do this for long periods of time and get the cylinder and the oil too hot and glazing the cylinders. So the reason for letting off for a period, and the doing it again, and then again.
