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Car Uses Too Much Oil, Why? Dear James, My 2010 Chevy Impala uses one quart of oil every 1000 miles. I have taken it back to the dealer and they tell me this is normal oil usage. Between oil changes I use 5 quarts of oil. This is way too much oil, I only have 8,000 miles left before my warranty runs out. What do you recommend I should do to get this problem fixed? Worried, Single Mom, Jan

Dear Jan, According to my database an engine that has excessive oil consumption uses 0.9 L (1 qt) of oil, or more, within 3, 200 km (2,000 mi). Below are the list of checks needed to make sure what your problem is. An improperly read oil level indicator dipstick could be the problem. So make sure your dipstick reads full after the oil has been changed. Not too full, or too empty. Inspect the oil level while the vehicle is parked on a level surface. Making sure you allow adequate drain-down time for the oil to return to the oil pan. Make sure you are using right oil viscosity (weight) and type. Dexos 1 compliant oil is needed for your make and model. Here are other reasons for excessive oil consumption. 1) Continuous high-speed driving. 2) Severe hauling, such as pulling a trailer. This causes decreased oil mileage. 3)A malfunctioning crankcase ventilation system . (PCV system) 4) External oil leaks. 5) Worn or omitted valve guides and/or valve stem seal. 6) Broken or worn piston rings. 7) Improperly installed or unseated piston rings. 8) Improperly installed or improperly fitted piston. 9) Plugged cylinder head gasket oil drain holes. 10) Damaged intake gaskets. If your car is still under the manufactures warranty, and you feel that you are not getting the proper attention from the dealership, then contact the manufacturers regional customer service representative at 1-800-458-8006 and file a complaint. Dealership service managers do not like getting a phone call from Regional Customer Representatives it really messes up their day.

 

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