Skip the auto shop - Our mechanics make house calls

Q: Gasoline smell from engine oil

asked by on

There is a gasoline smell in my engine oil that I noticed through the dipstick. No warning lights have appeared, no fuel mileage loss, no hesitation, no exhaust. What could be causing this?

A: Hello. The most common cause of the problem...

Hello. The most common cause of the problem you are having is when engine oil blows up in one of the engine cylinders. What may be happening is that the engine cylinder pistons aren’t sealing properly due to wear and tear. When the engine cylinder pistons don’t seal properly, some of the gas that’s involved in the combustion process in your engine is able to leak past the pistons and get into the oil. This tends to worsen over time so eventually, you may have to rebuild or replace the engine. I suggest having a professional mechanic inspect your engine as soon as possible. A certified mobile mechanic from YourMechanic can provide this inspection at your home or office.

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: Too little flow on the EGR.

Have a certified mechanic check the operation of the EGR(exhaust gas recirculation) system. In many cases, the fault can come from an EGR valve that is not working properly or carbon build-up blocking the recirculation passages.

Q: Is it my motor mount

Hello. Unfortunately a bad engine mount will not cause this. Most of the time this is caused by a bad crankshaft position sensor or a failing fuel pump. Most of the time when it just cuts off like this it...

Q: Warning lights 1998 Saturn SW1

You should make sure you are not low on coolant and the engine is not overheating. If you are, then do not drive the vehicle until it is diagnosed or severe engine damage may happen. The battery light may have...

Related articles

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...
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.