Comma Long Life Fully Synthetic 5W30 - 5 Liters ⚫ Review 🏆

Comma GML5L is a fully synthetic 5W-30 motor oil from Comma, a popular manufacturer of lubricants and car care products based in the UK. This motor oil is designed for modern gasoline and diesel engines requiring a low viscosity oil that meets the latest industry specifications.

The "5W-30" refers to the viscosity grade of the oil, with the 5W indicating good cold temperature (winter) flow and 30 indicating the viscosity performance at high engine temperatures. Fully synthetic oils like GML5L have superior resistance to thermal breakdown and provide better protection across a wide temperature range compared to conventional mineral oils.

The GML5L is a 5 liter container of high performance motor oil suitable for a wide range of passenger cars and light commercial vehicles, both turbocharged and naturally aspirated. It meets the latest specifications from major manufacturers such as VW, Mercedes Benz, Renault, GM and Ford. The synthetic formulation provides extended drain intervals compared to standard oils.

Specifications

The Comma GML5L motor oil has a 5W30 viscosity grade, meaning it flows well in cold temperatures yet maintains sufficient thickness when hot. This multi-grade oil provides versatility for use in different climates and seasons.

The oil carries approval for dexos2, an updated GM motor oil specification introduced in 2010. dexos2 aims to increase oxidation resistance and deposit control. Having this certification indicates the Comma oil meets GM's standards for durability and protection.

The oil comes packaged in a 5 liter container, which is a common size for bulk purchases. The large volume makes it more economical for frequent oil changes. The container should be readily usable for DIY changes, though a pump may help extract the thick oil.

Benefits

Comma GML5L motor oil provides a variety of benefits that make it an appealing choice. It is formulated to provide exceptional engine protection, improved fuel economy, and suitability for a wide range of vehicles.

The fully-synthetic construction using advanced additive technology allows Comma GML5L to protect critical engine components. It provides outstanding resistance to thermal breakdown at high temperatures. The oil maintains its viscosity and doesn't thicken under extreme engine stress. This results in reduced friction and wear for long-lasting performance.

The advanced formula also improves fuel economy. It has lower viscosity and reduced friction compared to conventional oils, allowing the engine to operate more efficiently. Drivers may notice a slight boost in MPG after switching to Comma GML5L.

Finally, this motor oil is suitable for a wide variety of gasoline and diesel engine vehicles. It meets or exceeds specifications from major manufacturers. So it can be used in many European, Japanese and American cars calling for a 5W30 viscosity grade. The oil is also backwards compatible with older vehicles recommending 5W30 oils.

Performance

The Comma GML5L motor oil delivers excellent real-world performance in a wide range of driving conditions. It provides strong protection against engine wear and oxidation even under prolonged heavy loads or high temperatures.

The advanced fully-synthetic formula resists thermal breakdown and deposit formation remarkably well. Tested in taxi fleets and high-mileage vehicles, it maintains outstanding sludge and varnish control over extended drain intervals. This helps prevent ring sticking and keeps pistons clean.

While many budget oils start to oxidize and thicken after 3,000-5,000 miles, losing viscosity and fluidity, the GML5L retains its original viscosity grade throughout full drain intervals. Its sheer stability and high viscosity index ensure stable lubrication film strength, reducing friction and wear.

The low-ash additive system minimizes particulate emissions and keeps catalytic converters functioning at peak efficiency for longer. Overall, the GML5L provides proven all-around performance across a wide range of driving styles and conditions.

Pros

The Comma GML5L oil has several key advantages that make it a great choice:

• Smooth cold starts: The fully synthetic formula provides excellent low temperature fluidity, allowing for easy starting and fast lubrication at cold start-up. This reduces engine wear during the critical warm-up phase.

• Keeps engine clean: Contains detergents and dispersants that help prevent deposit build-up and sludge, supporting long-term engine cleanliness.

• Anti-wear additives: Formulated with zinc anti-wear additives that form a protective layer on metal surfaces, preventing metal-to-metal contact and wear even under high load conditions. This prolongs engine life.

Cons

The Comma GML5L fully synthetic motor oil does have some downsides to consider.

• Expensive Compared to Conventional Oils

Fully synthetic motor oils like the Comma GML5L typically cost 2-3 times more than conventional motor oils. For some drivers watching their budget, this higher price tag can be hard to swallow. The increased cost per oil change may not make financial sense if you don't plan to keep your vehicle long-term.

• May Not Be Ideal for Very High Mileage Engines

For engines with over 100,000 miles, a high mileage conventional oil with more seal conditioners may be a better choice than a full synthetic. The detergent levels in synthetic oil can actually cause leaks in older engines. Very high mileage vehicles tend to benefit more from the extra seal conditioners in specially formulated high mileage oils.

Value

Comma GML5L provides premium quality fully synthetic motor oil at a competitive price point. When comparing cost per liter to other leading synthetic motor oils, Comma GML5L is very reasonably priced.

The 5 liter container offers enough oil for most vehicles to complete an oil change. For the quality and amount of oil, the price represents good overall value.

Some consumers initially balk at the higher sticker price for synthetic oil compared to conventional oils. However, when factoring in the extended drain intervals and engine protection provided by synthetics like Comma GML5L, the value becomes clear.

The investment upfront pays dividends through superior performance, reduced wear and tear, and longer lasting oil changes. So while more expensive than conventional oil per liter, Comma GML5L offers motorists strong value given its premium quality and performance.

Overall, when evaluating the price per liter and total cost of use, Comma GML5L stands out as a well-valued fully synthetic motor oil option. Drivers get robust protection and quality for a competitive price point.

Usage

The Comma GML5L is an ideal motor oil for gasoline and diesel engine passenger vehicles and light trucks. It meets or exceeds most OEM specifications and is suitable for a wide range of driving conditions and vehicle types.

Some key usage notes:

• Compatible with gasoline engines, diesel engines, and turbo-diesels. Provides excellent protection for both engine types.
• Recommended for passenger cars, SUVs, light trucks, and vans. Check your owner's manual for the specific viscosity grade recommended.
• Can be used in vehicles from Asian, European, and American manufacturers that recommend 5W-30 oils.
• Suitable for normal everyday driving as well as stop-and-go traffic and frequent short trips.
• Provides year-round protection in hot and cold climates.
• Ideal for vehicles with over 75,000 miles that need enhanced protection against wear.
• Can extend oil drain intervals when used with a new oil filter. Follow your manufacturer's recommendations.
• Always check oil levels regularly and top up if needed.

The GML5L meets most major OEM specifications for 5W-30 motor oil, making it a versatile choice for mixed vehicle fleets. It provides trusted protection for high mileage engines along with newer engines under warranty.

Comparison to Alternatives

Comma GML5L 5W30 synthetic motor oil compares well to other leading brands like Mobil 1 and Castrol. Here's how it stacks up:

• Viscosity and Temperature Range - Comma GML5L has a wide viscosity range that allows it to flow well in cold temperatures while providing protection at hot operating temperatures. Its 5W30 viscosity grade is comparable to Mobil 1 and Castrol synthetics.

• Wear Protection - Tests show Comma GML5L meets industry standards for wear protection, keeping critical engine components lubricated. It performs similarly to Mobil 1 and Castrol in this area.

• Oxidation Resistance - Synthetic oils like Comma GML5L are more resistant to viscosity breakdown over time compared to conventional oils. Its oxidation resistance allows for long drain intervals.

• Fuel Economy - The low viscosity synthetic formula provides reduced friction and improves fuel economy. Comma GML5L can deliver similar fuel savings benefits as Mobil 1 and Castrol.

• Price - Comma GML5L is competitively priced against comparable synthetic offerings from Mobil and Castrol. It delivers premium performance without the premium price tag.

Overall, Comma GML5L stands up well against industry leaders when it comes to critical performance areas for a full synthetic motor oil. Drivers can expect similar results at a more affordable price point. It's a great option for those looking for quality and value.

Conclusion

Comma GML5L motor oil is a quality fully synthetic 5W30 motor oil that offers many benefits for most gasoline and diesel engine vehicles. It meets or exceeds industry standards for performance and provides long-lasting protection.

The key pros of Comma GML5L are its long-life synthetic formula, fuel efficiency benefits, and ability to operate well in extreme temperatures. It also offers strong cleaning power to reduce deposits and sludge build-up. The oil is suitable for many makes and models, providing versatility.

Potential cons to consider are the higher price point compared to conventional oils. This premium synthetic formula does come at a cost. There are also comparable fully synthetic competitors in a similar price range.

Overall, for drivers looking for a high-performing, long-lasting motor oil that meets strict specifications, Comma GML5L is an excellent choice. It provides the premium protection and benefits expected from a leading fully synthetic oil. For those seeking maximum value or looking to cut costs, a more affordable conventional oil may be preferred. But Comma GML5L is a quality option that delivers on performance.