Q: Going through too much oil, not leaking out

asked by on

I drive a 2009 Toyota Corolla and have done routine maintenance including regular oil changes on time. Despite this, at just under 30,000 miles, my car is always running out of oil. I put a quart in when it goes below the minimum on the dipstick and that has been happening more and more frequently. There does not appear to be a leak anywhere. Where is the missing oil going? Into the engine?

What you are seeing with the oil consumption on your engine may be abnormal. The oil is being consumed by your engine. Some of the oil is being burned up in the combustion process and the rest is going out of the exhaust. The oil is getting by the pistons’ oil control rings inside your engine. These rings are designed to allow lubrication of your piston, but not allow excessive amounts to get above the piston. When excessive amounts get by the rings it causes the oil consumption you are having. You should have your Toyota dealer first run your VIN number to make sure your vehicle is not under any recalls or Technical Service Bulletins (TSB) for the reprograming of the computer for this oil consumption. Then do an oil consumption test to determine actual oil usage and mileage driven for that usage. They can then determine if your engine is consuming excessive amounts of oil. The test starts with a fresh oil change and sealing off the cap, drain, and dipstick. You will have to come back to them to top off your oil and so they can determine how much oil was burned. Once the test is complete then they can determine a solution for your issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Going through too much oil, not leaking out

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: Truck clicks, but doesn't start

Sounds like you may have a problem with the starter itself. The fact that it is clicking tells us that the switch and all of the necessary inputs are there and the starter is being triggered doesn't turn. One thing...

Q: How can I adjust the steering wheel?

You can adjust the position of the steering wheel to make it more comfortable to drive, especially on long trips. Push the lever under the steering wheel down as you hold the wheel. Move the steering wheel vertically or...

Q: Check engine light on

There area number of things that can cause a misfire such as low fuel pressure, vacuum leaks, faulty spark plugs or wires, a bad crankshaft position sensor, bad camshaft position sensor, faulty fuel injectors and many others. The most efficient...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...