Skip the auto shop - Our mechanics make house calls

Q: Why am I going through so much oil?

asked by on

After having a used engine put in my car a couple months ago my check engine light has come on and I'm having to put a quart of oil in about every 100 miles. The engine had about 63000 miles on it but came from a reputable company. I've had it back in the shop and they keep sending me home saying something about am oil consumption test. But also that there was oil in the tailpipe? I'm very nervous about driving my car like this. Especially since I've lost any kind of pickup in acceleration. What would cause this and what should I do?

My car has 97000 miles.
My car has an automatic transmission.

If you are using 1 quart for every 100 miles then you have a major engine problem. This much oil can get in through the piston rings, valves, and seals in the heads. You should have the engine checked for internal engine oil leaks. Oil consumption tests are to prove you are adding this much oil.

If you don’t want to keep going back to the dealer, consider YourMechanic, as a certified technician can come diagnose your oil leak and make the necessary repairs to your vehicle. Good luck.

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

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. Why am I going through so much oil?

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: Car runs hot when stopped?

There are several possible factors that can cause a vehicle to overheat while sitting still. The most common cause that I've seen is a malfunctioning radiator cooling fan. There could also be a defective coolant temperature sensor, low coolant level,...

Q: Car sputtering and dies

Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve is a small valve on the engine's intake system that...

Q: Intermittent vibrations due to two out-of-round tires

Replace the tires. It used to be possible to "true up" a tire that was out-of-round by putting the wheel/tire on a special machine that literally ground rubber off of the "high" side of the tire, making it physically round....

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.