Shelf Life

Does Canola Oil Go Bad?

Have you been wondering if canola oil has a shelf life?

If you’re cooking with canola oil, it’s important to know the answer. Canola oil is derived from crushed rapeseed and is widely used in baking, frying, and salad dressings due to its light flavor.

Did you know that most oils become more acidic over time? Food can go bad and taste bad if you leave it out too long.

It is important to know what signs of food going bad look like. So that you don’t get sick or eat yucky food.

Learn, does canola oil go bad? Also, discover helpful tips on storing oils correctly by reading further now!

How Long Does Canola Oil Last?

Canola oil is widely used in cooking and baking because it has a mild flavor and a high smoke point. But how long does canola oil last?


When unopened, canola oil will last for the expiration date printed on the bottle plus 6-12 months.

After that, it can be used if it doesn’t show signs of spoilage but some of its flavor and quality may be lost.

It’s important to store unopened cans of canola oil in a cool, dry place away from direct sunlight or heat sources to keep it fresh for as long as possible.


When stored properly in an airtight container away from direct sunlight, opened canola oil can last between 6-12 months before needing to be discarded.

Canola oil (unopened)Expiration date + 6 – 12 months
Canola oil (opened)6 – 12 months

How to Tell if Canola is Bad?


The smell of canola oil is a strong indicator as to whether or not it is bad. It should have little to no odor when fresh and will have a nutty, buttery smell.

If the oil has an unpleasant smell or if it smells like paint thinner, that is a good indication that it has gone bad and should be discarded.

Visual Changes / Color

Another way to tell if canola oil has gone bad is to look for any changes in the color of the oil. Fresh canola oil should be a light yellow or golden color.

If it has turned darker in color, this could mean that it has gone bad and should not be used.


Canola oil should also be checked for consistency. If the oil has become thicker or if it appears to have a greasy surface, this could mean that it has gone bad and should not be used.

Mold / Microbial Growth

The most obvious sign of spoilage in canola oil will be mold or microbial growth. If your canola oil has visible mold or discoloration, it’s a sure sign that it has gone bad and should be discarded immediately.


Taste is one of the simplest ways to determine if canola has gone bad. Canola that hasn’t gone rancid will have a mild, nutty flavor.

If you taste something bitter or off-tasting, it’s likely that the canola has gone bad and isn’t safe to eat.

It is important to check canola oil regularly for any signs of spoilage and to make sure that it has not gone bad.

If you notice any of the above signs, discard the oil immediately and purchase a fresh bottle. This will help ensure that you are consuming safe, high-quality canola oil.

What to do with Expired Canola Oil? 

Expired canola oil should not be used for cooking, as it can lose its nutritional value and taste over time.

It can also cause food poisoning due to the growth of bacteria or other microorganisms. Instead, expired canola oil has a variety of uses around the house.

1. One use is as a lubricant for locks and hinges. Canola oil can help reduce friction and make doors and drawers open more smoothly.
It also makes a great finishing polish on wood furniture to give it a glossy sheen.
2. Old canola oil can be used in places like factories. It does not burn easily and lasts for a long time in hot places, which is why it is so good for machines that get very hot.
3. Expired canola oil can be turned into a type of energy called biofuel. It is good for the environment, so more people are using it. It can turn into biodiesel, which can replace regular diesel fuel.
4. You can also use expired canola oil as an all-natural bug repellent. Mix some oil with peppermint or citronella oils. Spray it outside your home to keep away mosquitoes, flies, and other pests.
5. Old canola oil can be used in the garden. Mix the oil with dish soap and water, then spray it on weeds in your lawn or flower beds. This will kill the weeds without hurting other plants.
6. You can use old canola oil to make the leather look nice. Put a little bit on a cloth and rub it on the leather. This will make your furniture or shoes look shiny.

How to Store Canola Oil

Canola oil is a versatile, heart-healthy cooking oil that can be used for many different purposes. To ensure it remains of the highest quality and retains its health benefits, it is important to store it properly.

Keep your canola oil in a cool, dark spot. Light will make it go bad faster. The best temperature to store it is between 10°C and 20°C. A dark cupboard or pantry would work well.

When you store your canola oil, use a container that is airtight. Glass containers are the best. This will help the oil to last up to 12 months.

If you use plastic, make sure it does not have Bisphenol A (BPA) and keep it in a place without direct sunlight.

Use clean utensils when using canola oil. This will stop germs from getting in and spoiling it. Measure out only what you need for your recipe, then put the lid back on the container right away.

Storing canola oil correctly will help ensure that it is of the highest quality and retains its health benefits. With just a few simple steps, you can enjoy your meals knowing that you’re making a safe, healthy choice.

When To Throw Away Canola Fryer Oil?

Canola fryer oil should be thrown away when it becomes dark in color and has a foul smell.

Additionally, if the oil begins to foam or smoke while heating, this is an indication that it has gone bad and needs to be disposed of.

Canola fryer oil should not be used more than two or three times. The oil can get bad and taste bitter if it is used too many times. To avoid this, throw away the old oil and use fresh oil after a few uses.

It’s also important to store the fryer oil correctly when not in use. Store the oil in a sealed container and keep it away from direct sunlight.

Heat, light, and air can all cause the oil to go bad quickly, so make sure that it is properly stored when not in use.

To be safe, when throwing away fryer oil, make sure that it is placed in an airtight container before disposing of it in the trash or recycling. This will help keep the oil from spilling out and potentially causing a hazard.

Should Cooking Oil be Refrigerated?

Cooking oil is an important component of many savory dishes. When stored correctly, it helps ensure the food you’re preparing tastes its best.

Do you need to refrigerate cooking oil? Yes! Put it in the fridge. This will help it stay fresh and keep its flavor longer.

If you keep cooking oil at room temperature, it can go bad faster. Storing it in the fridge helps make it last longer and keeps its healthy benefits.

To refrigerate cooking oil, make sure it’s stored in an airtight container to prevent any odors from transferring from other foods.

Can You Freeze Cooking Oil?

Yes, you can freeze cooking oil! This is a great way to store your cooking oil for longer periods when you don’t plan to use it often. Freezing the oil prevents oxidation which makes it last much longer.

Cooking oil can be different thicknesses depending on what type it is and how cold it is outside.

When the temperature gets really low, cooking oils can get very thick without turning solid. This is called “supercooling”. If you put cooking oil in your freezer at home, it won’t turn into a block but will become thicker and creamier.

Freezing cooking oil will not keep it from going bad. Overall, freezing cooking oil is a great way to extend its life and save money on your grocery bill! Just be sure to check the oil for freshness after a few months in the freezer. Safe cooking!

Canola Oil Alternatives

Canola oil can be replaced with other types of oil. Some examples are olive oil, sunflower oil, coconut oil, and avocado oil. These can be used when cooking different recipes.

Olive oil

This food has good fats that help keep you healthy. It tastes great and can be used for baking, grilling, or eating raw.

Sunflower oil

This food has a mild flavor. That means you can use it in many different recipes. It is also good for you because it has special kinds of fats that are healthy for your body.

Coconut oil

This food has a lot of saturated fat, but it can be good for you if you don’t eat a lot. It is perfect for baking and deep-frying because it can handle high temperatures without burning or smoking.

Avocado oil

It has many of the same benefits as olive oil, but with a milder flavor. It is great for baking, sautéing, and salads.

When a recipe calls for canola oil, you can try other oils too. They will work just as well. You might even feel better when you use them! Try different oils until you find the one that works best for you.

Health Benefits of Canola Oil

Healthy Fats than Other Cooking Oil

Canola oil contains healthy fats. If you use it instead of saturated fats, it can help lower your LDL cholesterol levels and reduce your risk of getting heart disease.

Out of all the common cooking oils, Canola oil has been found to contain the least amount of saturated fat at a mere 7%.
It is a fantastic choice for those looking to reduce their trans fat intake, as it contains absolutely no trans fat!
It has the highest content of plant-based omega-3 fatty acids than any other cooking oil, making it an ideal choice for health enthusiasts.
It has an abundance of monounsaturated omega-9 fatty acid (oleic acid), making it a healthier alternative to other cooking oils.

Research-Proven Benefits

Science is showing that using canola oil can help make people healthier. It can reduce the risk of heart disease, diabetes, and metabolic syndrome.

Research showed some things that are important to know:

When people ate canola oil for 2.5 to 13 weeks, their bad cholesterol (LDL) went down by an average of 16.2%.
Eating food with a low glycemic load and using canola oil can help Type 2 diabetes patients have better blood cholesterol and sugar levels.
People at risk of metabolic syndrome who ate canola or high oleic canola oil had a decrease in the fat around their stomachs and their blood pressure.

Many health organizations say that canola oil is good for your heart.

The U.S. Food and Drug Administration agrees that if you use canola oil instead of fats that is bad for your heart. It may help to lower the chance of getting heart disease.

The FDA has said it is okay to say that high oleic canola oil is healthy because it has a lot of monounsaturated fat.

Scientists have evidence that suggests eating 1.5 tablespoons (19 grams) of oils high in oleic acid every day may help reduce the risk of heart disease.

To get this benefit, you should replace foods with fats and oils higher in saturated fat and not eat more food than usual.

In Canada, canola oil is good for your health. It helps you replace the bad fats in your body with good fats. Also, lowers your blood cholesterol.

Oils with at least 70% oleic acid

Swap out unhealthy fats for healthier ones, like polyunsaturated and monounsaturated fats. This can help lower your cholesterol levels.

Nutrition Value of Canola Oil

Canola oil is a great choice for cooking. It has 9%-11% of good fats and 63% monounsaturated fat. It also has special phytosterols that help control your cholesterol levels.

Canola oil has the least amount of saturated fat when compared to other types of oil.

  • Canola oil contains 7% saturated fat.
  • Sunflower oil contains 9% saturated fat
  • Corn oil contains 13% saturated fat
  • Olive oil contains14% saturated fat


What does rancid canola oil smell like?

If the oil smells bad like soap, chemicals, or is bitter, it has gone bad.

Can I use expired cooking oil?

It is not safe to eat oil after its expiration date. It can start to taste bad and that can make you sick. The oil can also pick up other flavors that do not taste good so it’s best not to eat it after the expiration date.

Can I use vegetable oil that expired 2 years ago?

Oils usually have a “best by” date instead of an expiration date. If the oil is kept in a good place and still smells and tastes good, you can use it after the “best by” date.

Does Canola Oil Go Bad? | Final Verdict

Canola oil is a great pantry staple that has multiple uses in the kitchen and many health benefits. If you store your canola oil properly and use it carefully, it will stay fresh and taste good for a long time.

However, be sure to keep an eye out for any signs of spoilage so that you can discard it safely. Also, craft yourself a new batch with the various alternatives available on the market.

Make sure to do research on the health benefits and nutritional value associated with your option to make sure it meets all of your dietary needs.

Dr. Renata Micha

Meet Dr. Renata Micha, a wellness and nutrition expert passionate about helping people live healthier lives through good nutrition. With a diverse academic background in human nutrition and dietetics, she holds a Ph.D. and has worked in various institutes across the US.

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