Skip the auto shop - Our mechanics make house calls

Q: Nothing seems wrong and the motor is burning oil

asked by on

I am unnerved at how cleanly my 2006 Chevrolet Impala can run while burning oil at the rate of 3 quarts every 2000 miles. I don’t see smoke or smell the oil, and none has leaked out. It’s just gone. Other than buying a lot of oil, there aren’t any issues from my end. It’s just odd. Should I just live with this? My car is near the 82,000 mile mark.

A: The oil consumption on most engines is supp...

The oil consumption on most engines is supposed to be less than 1 quart per 1,000 miles. You state you are using 3 quarts every 2,000 miles. The first thing would be to have an oil consumption test that would entail a fresh oil and filter change and monitor your oil usage to determine exact oil usage in 1,000 mile intervals. It is important to get the oil checked as close to the 1,000 mile interval as possible and oil added to bring back to full mark. If excessive oil consumption above 1 quart per 1,000 miles then the engine may have stuck oil control rings on the pistons and/or the positive crankcase ventilation (PCV) system needs to be serviced. There is a procedure by GM to clean out the carbon in the pistons by removing spark plugs and putting top engine cleaner in spark plug holes for 2 to 3 hours to dissolve carbon on piston rings and help free stuck oil control rings. Then to remove and replace the oil pan and replace the gasket with a new style gasket that limits how much oil sprays on back of pistons while driving at extended highway speeds. Then a new oil consumption test is to be done to see if oil consumption is normal. If still excessive then the engine pistons and rings would have to be replaced. Your first step is the oil consumption test.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Airbag on/off key switch is missing. Need to know if airbag is active or not.

Hello, thank you for writing in. If the switch is missing, and the electrical connections are not jumped (connected to each other without the switch in the middle), then the airbag circuit is open and it will not be active....

Q: Drove through high water

Hi there. From the description you have given, driving through the high water, your vehicle stall, and no crank situation may be the engine hydrostatically locked. The engine took water in through the intake, into the cylinders, preventing it from...

Q: Car running hot

The coolant may not be leaking, but fumes from the overflow can be smelled when it is running hot. Your vehicle should be checked to see if the fans are working, and the thermostat is okay. A pressure test for...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...