Skip the auto shop - Our mechanics make house calls

Q: Car uses quart of oil every 2 days

asked by on

Soon after purchasing a pre-owned car, it started using oil and recently it’s using a quart of oil every 2 days. It hardly has any power now. I checked the compression in all 4 cylinders and 3 of the cylinders were somewhere around 185-190. The last one was only around 140. What is the problem and can you tell me how to fix it?

A: Hello. If you are losing oil that fast it i...

Hello. If you are losing oil that fast it is because you have worn out piston rings or valve stem seals. Adding a little oil to the cylinder during the compression test will help you narrow this down. If the compression changed a lot then it is the rings. If not then it is the valve stem seals. Most of the time it is the valve stem seals on this engine.

Either way the engine will need to be taken apart to repair this. I'd suggest to get some help from a qualified mechanic to diagnose your oil consumption. Once the issue has been pinpointed, an accurate repair can be made to address it.

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・Save up to 30%

Get a quote

What others are asking

Q: Convertible top issues with no SID message

First item I would check is the fluid level of the pump behind the back seat. If the fluid level is at a proper level, then I would look for signs of water intrusion with the top half way up...

Q: Oil light says on for a short time when engine started from hot can you advise

In order for me to give helpful information, it would help to know about the details of your car. Knowing what specific year, make, model, and engine size is vital for me to know so that I can give you...

Q: Battery good, but car won't start.

The battery may be bad to the point it cannot operate the starter but had enough power to run the radio or lights. The starter will need about 100 to 200 amps to turn it properly, but a radio or...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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.