How To Fix Gas In Oil (A  Complete Guide With 2 Solutions)


Have you experienced lower fuel mileage economy and lack of smooth driving than usual?

Also, get a pungent smell from the oil? 

If so, you probably face the issue of gas in oil. 

Lifting the issue unresolved may wreak havoc on your car’s engine and fuel system. 

But, before that, you have to confirm you face the challenges due to mixing gas with oil. 

Fear not. I’ll cover you from identifying gas in oil symptoms. Causes. Diagnosis. And  how to fix gas in oil solutions. 

So, you can restore your engine’s oil system and health to enjoy optimal performance.

Symptoms Of Gas In Engine Oil ( 6 Surprising Clues)

If gas mixes with your oil, it might show you some signs. Knowing the symptoms and noticing them, you can predict the problem. Here are a few common telltale signs to determine the presence of gas in the oil. 

1. Wildly Fizzy Oil

Were you a science student? Then you must know chemical bubbling while doing the wrong experiment. If you notice, the oil in your vehicle resembles a frothy milkshake. 

This unwanted fizziness means gas has sneaked its way into the oil. The volatile mixer of gas and oil makes both of them contaminated. 

2. Mysterious Smell

If you get a distinct scent or smell without expectations from your engine oil. It might be the sign of gasoline in oil. It requires your attention to detect the reasons to keep the engine optimized.

3. Discolored Oil Drama

Preparing an oil change may astonish you by looking at the appearance of your oil. If gas infiltrates the oil, it dramatically changes its color. Typically, the oil is golden hue. But, that time, you find the oil darker shade, as after doing an automotive experiment.

4. Wayward Performance

Suddenly, does your engine behave like a rebellious teenager throwing tantrums on the road?

Mixing gas in oil may reduce engine performance, lead to misfires, idling erratically, or even stalling. 

These frustrating behaviors of the car’s engine may indicate gas in the oil system.

5. Surprising Power Loss 

Gas in oil may also snatch away the usual vigour and pep of your car. The unusual power loss of your engine may turn your spirited journey into a lacklustre experience. So, you won’t enjoy the optimal potential of your car. 

6. Engine Flooding

After driving miles, the oil level will usually go down for consumption. But isn’t it mysterious to level up the oil? Yes, if gas mixes with oil, its level will increase instead of decrease. It happens due to the additional fuel/gas present in the oil reservoir.

If you notice any of these signs in your engine oil system. It’s essential to diagnose the exact reason for the sign and fix it. 

What Causes Gas In Oil? (Unravel the Mystery In 5 Ways)

As the symptoms can be different for gas in the oil. The causes of it can be other depending on the symptoms. However, let’s see all the probable causes of gas in the oil. 

1. Sneaky Leaks

It could be beyond your imagination a tiny hole in the infiltrator silently breaking your vehicle’s engine defence. 

But, unfortunately, it can happen. The gas can mix with a sneaky leak in your engine system. Here, a faulty carburetor or fuel injector allows gas to seep into the oil. 

2. Ruthless Piston Rings

The unsung heroes of your engine system are the Piston rings. As they will precisely  seal the combustion chamber. However, these stalwart rings can be damaged over time due to wear and tear. So the sealing may loosen, and the gas sneaks into the loosened area. 

3. Fiery Hot Temperatures

Extreme hot weather won’t just make you feel discomfort. Excessive heat can also ignite troubles in your engine system. Running the engine under harsh weather can vaporize the fuel and bypass the piston rings. So that gas can mix with the oil. 

4. Wayward Wandering

Falling fuel droplets on the roads during driving your vehicle, but can’t understand where it comes from. It can be an inappropriate air-fuel mixture due to a faulty carburetor or malfunctioning sensor. So, the unburnt gas migrates into the oil system. 

5. Start-Stop Confusion

Most modern vehicles’ engines come with start-stop technology to boost efficiency. But, the twist is sometimes frequent engine starts and shutdowns disturb the dedicated fuel and oil balance. So, in these transaction periods, the gas may seep into the oil. It’s an unrecognized consequence of these innovative modern features.

Diagnose The Gas In Oil With An Unexpected Precision (5 Ways To Decode The Puzzle)

So, you know the signs and causes of fuel in the oil. Isn’t it easier to take action to fix the issue once diagnosed? 

This is why I’ll share 5 simple ways to decode the puzzle in this part of my discussion. Let’s see what they are…

1. Visual Revelations

Expecting the unexpected… and wearing your detective’s head… reach into the depths of the oil reservoir with a spotlight. 

Don’t be surprised to notice foamy or frothy appearance spots in the oil. It helps you to suspect the first clue of fizzy oil symptoms for gas in the oil. 

2. A Sniff of Truth

This time you have to rely on your smelling power. Insert the dipstick into the oil reservoir, and hold it before your nose. Smell the oil of the dipstick. 

If an unmistakable odor from the oil surprises your senses. It might be the gas exposure in the oil system. The second clue of detecting gas in oil. 

3. Bold Consistency Test

Luckily, your nose is released from getting the foul oil odors. Now, it’s time to check its color and consistency. The third clue of gas oil detection. 

Take a drop of oil on your index finger. Rub it between the thumb and index fingertips. Pay attention to the texture, colors, and thickness of the oil. If you feel the oil is thinner than usual and more volatile. It could be for mixing gas in the oil.  

4. Testing the Torch

Undoubtedly fire is dangerous. But, you can confirm gas in oil unleashing its power. Dip a heat-resistant rod with the oil you got from your vehicle reservoir. 

Now, wearing heat proof hand gloves. Hold one of its edges above the flame. If unexpectedly, the oil of the rod ignites as a fuel source. There is no room for doubt about the presence of gasoline in the oil. 

5. Scientific Test 

A gas analyzer is a gadget with a digital screen. It comes with the power to detect the oil’s gasoline percentage. And it shows the number on its screen. 

If you have the gas analyzer tool, use it to check the gas in the oil. If gas mixes with your engine oil, it shows the number of amounts. 

A Complete Guide On How To Fix Gas In Oil (Unveiling The Step-by-step 2 Alternative Solutions)

Finally,  it’s time to fix the issue to rejuvenate the fuel economy of your vehicle. Save extra fuel costs with smooth driving experiences. …..

Solution 1: Drain the Contaminated Oil & Infuse Fresh Oil 

If the signs (fizzy oil, mysterious smell, or discolored oil drama) match with detecting gas in oil. Draining the old oil and pouring new oil can solve the issue.  

Steps To Follow 

  • Safely reach the drain plug of the oil reservoir.
  • Unplug the oil drain plug, and before that, place an oil-dripping pan beneath it.
  • Dispose of the oil until you are assured that no more contaminated crude is in the reservoir.
  • Reattach the drain plug and get you back out beneath the vehicle. 
  • Pour your vehicle manufacturer-recommended high-quality oil in the reservoir. 

Solution 2: Fixing Leaks/Repairing Carburettor

If gasoline is mixed due to sneaky leaks,  loosened piston rings, or faulty carburettor. In that case, you have to fix the leaks or tighten the piston ring, or replace the carburettor before pouring fresh oil to solve it.

Steps To Follow 

  • Closely observe the fuel injector system after draining oil to identify the leaks. 
  • And try to rotate the Piston rings with your fingertips. 
  • And check the carburettor’s functionality. 
  • If you find the leaks or piston rings rotate, or faulty carburettor.
  • Seal the leak with sealant, or tighten the piston rings with a wrench, or replace the carburettor. 
  • After that, introduce the new oil into the reservoir. 

Preventive Measures

  • Do regular maintenance tasks to keep your top-notch engine position, flowing oil into the engine. 
  • Change the oil within every 7500 to 10000 miles or per your manufacturer’s recommendations.
  • Use high-quality oil that can handle extreme temperatures ensuring engine protection. 
  • Fill gasoline from a trusted and reputed source to ensure uncontaminated and clean oil. 
  • If you have to store the vehicle for an extended period. Keep the fuel reservoir full by adding a fuel stabilizer. So it helps to prevent oil degradation.


Usually, it’s simple to fix gas in oil. But it requires going with a systematic approach with detailed careful attention. 

Since this simple issue can turn into a whale and damage your engine permanently, it’s not wise to ignore it.

Instead, as soon as you suspect gas in the oil or noticing any signs… you should immediately diagnose the exact cause and take steps to fix it.

Your one hour, a little bit of energy and effort invested will keep your engine healthy for an expected period. 

In addition, follow the tips to prevent further gasoline mixing in the oil to safeguard your engine.

Leave a Comment