By CostcoFan | Updated June 2026
Item #1129578 | Marianne’s Harvest Brand 100% Pure Avocado Oil | 2 Liters (67.6 fl oz) | $21.89-26.99 (varies by location, originally $18.79)
We keep 2 oils in the kitchen at all times: Kirkland Signature Olive Oil and avocado oil. The reason is simple — they serve different purposes. Olive oil is our go-to for salad dressings and low-heat cooking. Avocado oil handles everything that requires high heat: frying tostadas, making chips, searing steaks, cooking on the Blackstone. The 500°F smoke point means you can push it hard without generating the toxic fumes and free radicals that happen when you heat olive oil past its 375-400°F limit.
Marianne’s is the avocado oil Costco currently carries in the 2-liter size. At $22-27 depending on your location, it’s one of the most affordable pure avocado oils available in this quantity. Here’s whether it’s worth buying over the alternatives.
This article contains affiliate links. As an Amazon Associate, CostcoFan earns from qualifying purchases at no additional cost to you.
What You’re Getting
One ingredient: Avocado oil. That’s it. No blends, no filler oils, no additives. The label lists a single ingredient, which is exactly what you want from a cooking oil. Multiple independent studies have found that many avocado oils on the market are adulterated with cheaper oils like soybean or sunflower oil. Marianne’s has been identified by long-time users as one of the oils that consistently tests as pure avocado oil.
Specs:
- 100% Pure Avocado Oil
- 2 liters (67.6 fl oz)
- 500°F smoke point
- Non-GMO Project Verified
- Kosher certified (Circle U)
- BPA-free plastic bottle
- Made in the USA with avocados sourced from Mexico
- Family-owned company with 100+ years in food production
Per serving (1 tablespoon/15 mL): 130 calories, 14g total fat (2g saturated, 10g monounsaturated), 0g trans fat, 0mg cholesterol, 0mg sodium, 0g carbohydrates, 0g protein
Why Avocado Oil Over Olive Oil
This is the most common question from shoppers who already have olive oil at home. The answer is smoke point.
Extra virgin olive oil: 375-400°F smoke point. Great for dressings, dipping bread, low-heat sautéing. When heated past its smoke point, olive oil breaks down, smokes, and generates harmful free radicals. If your pan is smoking with olive oil, you’re damaging the oil and potentially your health.
Avocado oil: 500°F smoke point. Handles deep frying, high-heat searing, stir-frying, grilling, and Blackstone cooking without breaking down. The neutral flavor means it doesn’t impart taste to your food the way olive oil does — which is either a pro or a con depending on what you’re cooking.
The practical rule: Use olive oil for cold or low-heat applications where you want flavor (dressings, pasta finishing, bread dipping). Use avocado oil for anything involving high heat (frying, searing, grilling, roasting above 400°F). Having both in your kitchen covers every cooking scenario.
The monounsaturated fat profile of avocado oil is comparable to olive oil — both are considered heart-healthy fats. You’re not trading health benefits by switching to avocado oil for high-heat cooking. You’re gaining safety by using an oil that can handle the temperature.
The Cloudy Oil Debate
The most common complaint about Marianne’s avocado oil is cloudiness. Multiple reviewers report the oil appearing thick and cloudy, especially in the bottom third of the bottle. This has caused concern among buyers who associate clarity with quality.
Here’s the truth: Cloudiness in avocado oil is caused by natural waxes present in the avocado fruit. When the oil is stored at cooler temperatures (or even at room temperature in some climates), these waxes solidify and create a cloudy appearance. This is completely normal and does not affect the quality, safety, or performance of the oil. Refrigerating the bottle will make it even cloudier — one reviewer noted the oil becomes nearly solid when cold, which is actually a sign of purity.
Many mass-market avocado oils are winterized (a process that removes the natural waxes to keep the oil looking clear). Winterizing doesn’t improve the oil — it just changes the appearance. The fact that Marianne’s shows natural cloudiness suggests minimal processing.
If the cloudiness bothers you visually, simply let the bottle sit at room temperature and give it a gentle shake before use. The oil performs identically regardless of appearance.
The Plastic Bottle Question
Some buyers are disappointed that Marianne’s comes in a plastic bottle rather than glass. At the 2-liter size, glass would make the bottle significantly heavier and more expensive to ship (which would increase the price). The bottle is BPA-free, which addresses the primary health concern with plastic food containers.
For those who strongly prefer glass, you can pour the oil into a glass bottle or dispenser at home for daily use and keep the large plastic bottle in the pantry as your refill supply. Several Amazon alternatives listed below come in glass bottles if that’s a priority for you.
Costco Pricing: Then and Now
The price of Marianne’s avocado oil has increased with inflation, but Costco remains the most competitive source for this quantity:
Costco price history:
- 2020: $18.79
- 2024-2025: $21.89-24.99
- 2026: $21.89-26.99 (average $26.14 across 449 locations)
Price per ounce at Costco: $0.32-0.40/oz
Competitor pricing for comparable 2L bottles:
- Chosen Foods 2L on Amazon: $27-32
- Chosen Foods 2L on Costco.com: $27.49 (when in stock)
- BetterBody Foods 1L on Amazon: $12-15 ($0.71-0.89/oz — nearly double per ounce)
- Walmart (Chosen Foods 2L): $24-28
Even at the upper end of Costco’s price range ($26.99), you’re paying roughly $0.40/oz. Comparable oils at grocery stores and Amazon run $0.50-0.90/oz. The Costco price advantage adds up quickly when you’re going through a bottle every few months.
What Buyers Love
Based on 167 reviews on Costco.com, the most consistent praise centers on 3 things:
The high smoke point is a game-changer. Buyers who switched from olive oil or vegetable oil for frying universally praise the difference. No smoking, no burning, no off flavors at high temperatures. Multiple reviewers specifically mention using it on Blackstone griddles, for deep frying, and for oven roasting at 425°F+.
The neutral flavor is ideal for cooking. Unlike olive oil, Marianne’s avocado oil doesn’t add flavor to your food. This makes it perfect for baking (cookies, breads, cakes, pie crust), frying (where you want the food’s flavor, not the oil’s), and applications where a clean, neutral oil is needed.
Long-time buyers keep coming back. Multiple reviewers mention buying this oil for 2-3+ years and never switching. The combination of purity, price, and performance keeps them loyal.
What Buyers Don’t Love
The cloudiness concerns some people. As discussed above, this is a natural characteristic of unfiltered avocado oil, not a quality issue. But it understandably worries buyers who have never seen cloudy oil before.
No labeling for pressed method. One reviewer flagged that the bottle doesn’t specify whether the oil is expeller-pressed, cold-pressed, or refined. This is a valid concern for health-conscious buyers who want to know exactly how the oil was processed. Marianne’s website states it’s refined, which means it undergoes some processing to achieve the high smoke point and neutral flavor — but they do not use hexane or chemical solvents.
Plastic bottle preference. A subset of buyers prefer glass for any cooking oil. At the 2-liter size, plastic is the industry standard for cost and safety reasons, but the preference is understandable.
Marianne’s vs. Chosen Foods: Which Should You Buy?
Costco has carried both Marianne’s and Chosen Foods avocado oil at different times. Here’s how they compare:
Marianne’s Harvest Brand (Item #1129578): ~$22-27 at Costco. 100% pure avocado oil, Non-GMO, made in USA, BPA-free plastic. Does not specify pressing method on label. Natural cloudiness is common.
Chosen Foods (Item #1331709): ~$27.49 on Costco.com (when available). 100% pure avocado oil, Non-GMO, Paleo certified, Glyphosate-free, expeller-pressed. Has been confirmed pure in UC Davis independent testing. Slightly more expensive but more transparent about processing.
The verdict: Both are legitimate pure avocado oils from reputable companies. If you want the lowest price, go Marianne’s. If you want the most transparency about sourcing and processing, Chosen Foods is worth the extra $3-5. Both have a 500°F smoke point and perform identically in the kitchen.
How to Use Avocado Oil
Best uses:
- Deep frying and pan frying (tostadas, chips, chicken, fish)
- High-heat searing (steaks, pork chops, scallops)
- Blackstone griddle and flat-top grill cooking
- Oven roasting at 400°F+ (vegetables, chicken, potatoes)
- Baking (cookies, breads, cakes — anywhere a recipe calls for vegetable oil)
- Homemade mayo (though one reviewer noted Chosen Foods works better for emulsification)
- Hair and skin care (some users apply it topically as a natural moisturizer)
Not ideal for:
- Salad dressings where you want flavor (use olive oil instead)
- Bread dipping (use olive oil — the neutral flavor of avocado oil doesn’t work here)
- Any application where you specifically want the taste of oil
Frequently Asked Questions
Is the Costco avocado oil real avocado oil?
Yes. Marianne’s 100% Pure Avocado Oil contains a single ingredient: avocado oil. It is Non-GMO Project Verified and made by a family-owned company with over 100 years in food production.
Why is my Costco avocado oil cloudy?
Natural waxes in avocado oil solidify at cooler temperatures, causing a cloudy appearance. This is normal and actually indicates minimal processing. The oil is safe to use and performs identically when cloudy or clear.
What is the smoke point of Costco avocado oil?
500°F, which is significantly higher than olive oil (375-400°F) and most other cooking oils. This makes it ideal for frying, searing, and high-heat cooking.
Is Costco avocado oil in a glass bottle?
No. Marianne’s comes in a BPA-free plastic bottle at the 2-liter size. Glass alternatives are available on Amazon (see links below).
How much is avocado oil at Costco?
Current pricing ranges from $21.89 to $26.99 depending on location (Item #1129578). The average price across 449 reporting locations is $26.14.
Does Costco sell avocado oil spray?
Costco periodically carries avocado oil cooking spray, typically from Chosen Foods. Check your local warehouse for current availability.
Can I use avocado oil for making mayo?
Yes, though results vary. Some users report excellent homemade mayo with Marianne’s, while others have found it doesn’t emulsify as well as Chosen Foods avocado oil. If mayo-making is your primary use, Chosen Foods may be the better option.
Where to Buy
Costco In-Store: $21.89-26.99 (Item #1129578) — available year-round at most locations
If your Costco doesn’t carry it or you prefer alternatives:
Chosen Foods 100% Pure Avocado Oil, 2 Liter on Amazon → The premium alternative. Expeller-pressed, Non-GMO, UC Davis purity-tested. Same 500°F smoke point, same 2-liter size. Slightly more expensive but maximum transparency on sourcing and processing.
Chosen Foods Avocado Oil Spray, 13.5 oz on Amazon → Avocado oil in spray format for quick, even coating. Propellant-free. Great for air fryers, sheet pan cooking, and grilling. The spray Costco shoppers search for most.
BetterBody Foods Avocado Oil, 1 Liter on Amazon → Budget-friendly option in a smaller size. Non-GMO, refined, 500°F smoke point. Good starter bottle if you’ve never cooked with avocado oil before.
(As an Amazon Associate, CostcoFan earns from qualifying purchases.)
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This article contains affiliate links. As an Amazon Associate, CostcoFan earns from qualifying purchases at no additional cost to you. CostcoFan is not affiliated with Costco Wholesale Corporation or Marianne’s Harvest Brand.
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