I am looking for info on abnormal oil consumption for my grandfathers 2006 Impala SS. It is a very early build 2006 going from memory. It is using enough oil in between changes that the low oil warning light is turning on. The local chevy dealer is claiming that 1 quart of oil every 1000 miles is normal and its just due for an oil change. It is sitting right at 3000 miles since the last oil change. Now my Grandpa is 85 years old, and I have a feeling they are just trying to avoid fixing whatever is wrong. These are the questions I have.

How many quarts low is it when the warning indicators on the dash start going off. My grandpa said the dipstick was nearly dry when he checked it today. I am going over in the morning to check it over better.

Everything I have read says at most for normal oil usage is 1 quart in 3000 miles at most not 1 quart every 1000 miles. Is this true?

Thanks in advance the help.

Tom