Does canola oil go bad? (+3 Nutritional facts)

In this brief introduction, we will address the question, “Does canola oil go bad?” as well as other questions pertaining to the subject at hand like how to store canola oil and how long it can last.

How Long Does Canola Oil Last

Canola oil lasts from 6 months to a year when opened.

Once you open the bottle, oil gets exposed to fresh oxygen which speeds up the oxidation process, resulting in the oil going rancid. However, that process is relatively slow, especially if you remember to keep the bottle sealed. After opening the bottle, you should finish it up within about 6 to 12 months for the best quality.

Like all other oils (peanut oil, sesame oil, rapeseed oil) canola oil also comes with a best-by on the label, which is a rough estimate of how long the oil should retain freshness.

Of course, the way oil is stored affects how well it keeps its quality. If you store the canola oil properly, it should last longer than the best–by date without going rancid. It can easily go rancid before that date if kept in the open, exposed to sunlight. The better the storage, the longer it should last in good quality past the date on the label.

What is canola oil?

Canola oil is one of the most vital ingredients in cooking. It has a lot of uses, especially as a flavour enhancer. Canola oil has a subtle flavour (if not neutral) and has a high smoke point.

Hence, this vegetable oil serves so many purposes and is suitable for stir-fry, sauté, deep fry, and baking. Canola oil also tastes great for salad dressing and marinade. You can also it is as:

Oil for baking, grilling, stir-frying food with carbon steel wok. In marinades, salad dressings, and sauces An alternative to solid fats like butter and margarine.

It is usually compared with olive oil because of their shared nuances and similarities. However, many people are somewhat confused as to whether this oil has an expiration date. Does canola oil go bad? How long does this cooking oil last? How to tell if this oil has gone bad? How to store canola oil? 

How to Tell if Canola Oil is Bad

Oil is a natural food preservative, hence, it is typically a long-lasting food item. However, proper storage is still required to maintain the quality and shelf life. 

Unlike perishable foods (like meat products) that are prone to bacterial contamination, canola oil is more susceptible to exposure to air, heat, and sunlight. As with other fatty or oily foods, canola oil is vulnerable from going rancid.

The smell is the first thing you need to check when observing the oil. Canola oil has a light flavour. If it smells rancid or unpleasant in any way, it’s time to discard it. 

Although rancid oil would not hurt our health, it will ruin the taste of your dishes. Next, any notable changes in colour and texture or presence of molds is an alarming sign. Canola oil is generally clear and transparent. If it darkens, it shouldn’t be used for cooking.

Other FAQs about Oils which you may be interested in.

How long does peanut oil last?

Does oil go bad?

Does Coconut oil go bad?

3 Nutritional facts about canola oil

Contains Vitamins 

Canola oil contains vitamin E and K in a reasonable quantity. Vitamin K plays an important role in bone formation and blood clotting. It reduces the chances of serious injuries and excessive bleeding.

On the other hand, Vitamin E is a potential antioxidant that protects the body cells from the damaged caused by free radicals. Free radicals are harmful substances released during metabolism and are neutralized by adequate vitamin and mineral consumption. 

Both Vitamin E and K are fat soluble vitamins that can be stored in the body. So, adequate consumption of canola oil helps build up reserves in the body. 

Contains Omega-3 and 6 fatty acids

Canola oil contains Omega 3 and Omega 6 fatty acids that help to lower LDL Cholesterol and increase the HDL cholesterol. LDL cholesterol is bad for your health: conversely, HDL or “good” cholesterol positively influences one’s health. 

Best cooking oil

Despite being infamous for its overconsumption, canola oil has only 7% saturated fat, which makes it an ideal choice for sauteing and baking. The flavor of canola oil is also mild and does not interfere with the taste of other ingredients.



When stored well, canola oil can last for 1 year or more. What’s much more likely to happen

is that the oil goes rancid. Rancidity is caused by prolonged exposure to air, light, moisture,

or by bacterial action. Generally, rancid oil isn’t unsafe to consume, but it has that specific

rancid smell and taste. So if you notice that your oil is rancid, you can continue using it or

discard it.


In this brief guide, we addressed the question, “Does canola oil go bad”? as well as other questions pertaining to the subject at hand like how to store canola oil and how long it can last. 


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.