Updated:19 October 2026
Rank 1-9 of the best Engine Oil 5W40
Our recommendation Price Customer rating
1. Comparison winner
Comma XFG5L 5W40 Motor Oil, 5 Litre
Comma XFG5L 5W40 Motor Oil, 5 Litre
Available immediately
free shipping
  • 5w40 viscosity keeps engines clean and reduces emissions
  • suitable for petrol and diesel engines, including fuel injected, multivalved and turbocharged
  • provides engine protection at extreme temperatures
Our rating
9,8
very good
2. Bestseller
Castrol EDGE 5W-40 Engine Oil, 4L
Castrol EDGE 5W-40 Engine Oil, 4L
Available immediately
free shipping
  • suitable for ACEA C3 engines
  • protects against wear in extreme temperatures
  • compatible with manufacturer requirements including API SN/CF, BMW Longlife-01, MB-Approval 226.5/ 229.3/ 229.5, Porsche A40, Renault RN0700/ RN0710, VW 502 00/ 505 00
Our rating
9,6
very good
3. Best value
Triple QX 521776031 Engine Oil 5L 5W40 A3 B4
Triple QX 521776031 Engine Oil 5L 5W40 A3 B4
Available immediately
free shipping
  • 0W-30 viscosity for optimal engine performance
  • suitable for both petrol and diesel engines
  • provides protection in extreme temperatures
Our rating
9,5
very good
Castrol MAGNATEC 5W-40 C3 Engine Oil 1L
Castrol MAGNATEC 5W-40 C3 Engine Oil 1L
Check delivery time
free shipping
  • viscosity: 5W-40
  • suitable for automotive gasoline and diesel engines
  • protection in high and low temperature conditions
Our rating
9,5
very good
Carlube Triple R 5W-40 Engine Oil 2L
Carlube Triple R 5W-40 Engine Oil 2L
Available immediately
free shipping
  • suitable for motor engines requiring ACEA C3 and API SP specifications
  • protects against wear and tear in extreme temperatures
  • meets performance and protection standards such as ACEA C3 and API SP
Our rating
9,5
very good
TotalEnergies Quartz 9000 5W40 Engine Oil 1L
TotalEnergies Quartz 9000 5W40 Engine Oil 1L
Check delivery time
free shipping
  • viscosity: 5w-40
  • suitable for motor types: petrol and diesel engines
  • protection in extreme temperatures: provides protection during high and low temperature operation
Our rating
9,3
good
Lucas Oil 47044 Synthetic Engine Oil 5W-40, 1 Litre
Lucas Oil 47044 Synthetic Engine Oil 5W-40, 1 Litre
Available immediately
free shipping
  • 5W-40 viscosity
  • suitable for petrol and diesel engines
  • provides protection in extreme temperatures
Our rating
9,0
good
Comma Syner-G 5W40 Synthetic Motor Oil 1L
Comma Syner-G 5W40 Synthetic Motor Oil 1L
Available immediately
free shipping
  • viscosity of 5W40 suitable for a wide range of vehicles
  • protects engines in both high and low temperatures
  • meets or exceeds manufacturers' specifications
Our rating
8,9
good
Carlube Triple R 5W40 Oil 1 Litre
Carlube Triple R 5W40 Oil 1 Litre
Available immediately
free shipping
  • offers excellent protection in extreme conditions
  • supports manufacturer standards such as ACEA C3 and API SP
  • provides excellent protection against wear and tear
Our rating
8,9
good

Similar Engine Oil 5W40 comparisons

Engine Oil 5W40 buying guide: How to choose the right product from the above Engine Oil 5W40 test or comparison

Understanding 5W40 Engine Oil: What Makes It Special?

What Does 5W40 Mean?

When we talk about 5W40 engine oil, we are referring to its viscosity rating, which is a measure of how well the oil flows in different temperatures. The ‘5W’ indicates its performance in cold weather, meaning the oil is thin enough to flow at temperatures as low as -23°C, ensuring easy starts and sufficient lubrication during winter months. The ’40’ part means the oil maintains a thicker consistency when the engine is running at higher temperatures, providing the necessary protection and efficiency. This dual capability makes 5W40 oil a fantastic choice for varying climates.

Why Is It Special?

What sets 5W40 engine oil apart is its versatility. It’s suitable for a range of vehicles, from high-performance sports cars to heavy-duty trucks. This oil type is designed to handle both low and high temperature extremes, thus appealing to drivers in diverse environments. Additionally, its synthetic composition provides superior lubrication, reducing engine wear and improving fuel efficiency. This means that by choosing 5W40, you’re investing in an oil that is adaptable and can perform well throughout the year.

Key Benefits of Using 5W40 Engine Oil in Your Vehicle

Enhanced Engine Protection

One of the primary benefits of using 5W40 engine oil is the enhanced protection it offers your engine. The oil forms a strong protective film that reduces friction between moving parts, significantly decreasing wear and tear. This protection helps extend the life of your engine, saving you money on potential repairs.

Improved Fuel Efficiency

By maintaining optimal engine lubrication, 5W40 engine oil can also contribute to improved fuel efficiency. The reduced friction allows the engine to work more efficiently, which can lead to better fuel consumption. This means you could be visiting the petrol station less frequently, putting more money back in your pocket.

Versatility Across Seasons

With its ability to perform well under different conditions, 5W40 oil is ideal for regions with varying temperatures. Whether you’re experiencing the chill of winter or the heat of summer, this oil ensures that your engine functions optimally year-round, eliminating the need for seasonal oil changes.

How to Choose the Best 5W40 Engine Oil for Your Needs

Check Manufacturer Recommendations

The first step in choosing the best 5W40 engine oil is to check your vehicle’s owner manual. Manufacturers often specify the type of oil that suits your engine best. By adhering to these recommendations, you ensure compatibility and optimal performance.

Consider Synthetic vs. Conventional Oil

Next, decide whether you want synthetic or conventional 5W40 oil. Synthetic oils are generally more refined and offer better performance, especially under extreme conditions. They also have a longer lifespan, meaning you won’t have to change the oil as often. On the other hand, conventional oils are often more cost-effective but may not perform as well in challenging environments.

Evaluate Additives and Formulations

Lastly, check what additives and formulations are included in the oil. Look for options that include detergents, anti-wear agents, and antioxidants, which can enhance the oil’s performance and provide additional protection for your engine.

Top 5 5W40 Engine Oil Brands to Consider

Brand Reputation and Quality

When selecting a 5W40 engine oil, it’s prudent to consider well-known brands that have built a reputation for quality and reliability in the industry. Brands that consistently deliver high-performance oils will provide you with confidence that your engine is being well cared for.

Cost vs. Quality

While price is always a consideration, it’s crucial to balance cost with quality. Opting for a slightly more expensive oil from a reputable brand can yield better long-term results for your vehicle, delivering both performance and protection. You don’t want to compromise your engine’s health over a few pounds.

User Reviews and Experiences

Another helpful approach is to look at user reviews and experiences with different brands. Real-world feedback from fellow vehicle owners can guide you towards brands that perform well and meet expectations, helping you make a more informed decision.

Tips for Properly Using and Storing Engine Oil

Follow Recommended Oil Change Intervals

To maintain optimal engine performance, it’s essential to change your oil at intervals recommended by the vehicle manufacturer or oil producer. Regular changes will keep the engine clean, prolong its life, and ensure it runs efficiently.

Store Oil Correctly

If you purchase engine oil in bulk or need to store it for future use, remember to keep it in a cool, dry place away from direct sunlight. Ensure that containers are tightly sealed to prevent contamination or evaporation, which can degrade the oil.

Utilise Proper Disposal Methods

Finally, when it’s time to change your oil, always dispose of the used oil responsibly. Many recycling facilities accept used oil, which can be reprocessed and reused. It’s important for both environmental sustainability and compliance with local regulations.

Table of contents
  1. Understanding 5W40 Engine Oil: What Makes It Special?
  2. Key Benefits of Using 5W40 Engine Oil in Your Vehicle
  3. How to Choose the Best 5W40 Engine Oil for Your Needs
  4. Top 5 5W40 Engine Oil Brands to Consider
  5. Tips for Properly Using and Storing Engine Oil

Overview

1. Comparison winner
Comma XFG5L 5W40 Motor Oil, 5 Litre
Our rating
9,8
very good
Comma XFG5L 5W40 Motor Oil, 5 LitreAvailable immediately
2. Bestseller
Castrol EDGE 5W-40 Engine Oil, 4L
Our rating
9,6
very good
Castrol EDGE 5W-40 Engine Oil, 4LAvailable immediately
3. Best value
Triple QX 521776031 Engine Oil 5L 5W40 A3 B4
Our rating
9,5
very good
Triple QX 521776031 Engine Oil 5L 5W40 A3 B4Available immediately
Castrol MAGNATEC 5W-40 C3 Engine Oil 1L
Our rating
9,5
very good
Castrol MAGNATEC 5W-40 C3 Engine Oil 1LCheck delivery time
Carlube Triple R 5W-40 Engine Oil 2L
Our rating
9,5
very good
Carlube Triple R 5W-40 Engine Oil 2LAvailable immediately
TotalEnergies Quartz 9000 5W40 Engine Oil 1L
Our rating
9,3
good
TotalEnergies Quartz 9000 5W40 Engine Oil 1LCheck delivery time
Lucas Oil 47044 Synthetic Engine Oil 5W-40, 1 Litre
Our rating
9,0
good
Lucas Oil 47044 Synthetic Engine Oil 5W-40, 1 LitreAvailable immediately
Comma Syner-G 5W40 Synthetic Motor Oil 1L
Our rating
8,9
good
Comma Syner-G 5W40 Synthetic Motor Oil 1LAvailable immediately
Our product comparisons are:
Always up to date:
At most every 120 days, we update each category with new products and research developments in the top rankings. This ensures that our recommendations are always up to date
Neutral and independent:
Our tests and comparisons are objective and fact-based. Manufacturers have no influence on the ratings. We aim to provide greater transparency in the market, thereby promoting product quality.
Method-driven
In our tests & comparison tables, we only include products that meet our minimum standards. This ensures that you can find the perfect product for your needs from a wide selection.
Similar tests and comparisons - Automotive Oils and Fluids