When the engine runs continuously at high intensity, it generates a large amount of heat. If this condition persists, it can lead to overheating, reduced performance, and serious internal damage. This is why coolant plays a crucial role in maintaining the engine’s ideal temperature, extending component lifespan, reducing corrosion risks, and minimizing costly repairs. Choosing the right coolant is not only a technical solution but also a long-term investment to protect your vehicle. In this article, let’s analyze and compare two standout coolants from Voltronic: Voltronic G12+ and G11 to help you make the most suitable choice for your car.
The Role of Coolant
Coolant is a circulating fluid that passes through heat-generating components and releases heat at the radiator within the cooling system. It performs several critical functions:
- Dissipates heat from the engine during operation.
- Prevents overheating that can cause damage.
- Protects metal parts in the system from corrosion.
- Prevents freezing and scaling in harsh environments.
A major advantage of Voltronic G12+ and G11 is outstanding convenience: both products are factory pre-mixed to the correct ratio, ready to use immediately without dilution. Unlike concentrate coolants that require manual mixing, this saves time, ensures optimal cooling performance, and eliminates the risk of incorrect ratios during handling.
>> Read more: Maintenance procedure for a newly purchased car
Technology and Composition Overview
Voltronic G12+ applies advanced OAT (Organic Acid Technology) with organic additives imported from Germany. This formula contains no silicates or phosphates, reducing scale deposits, preventing corrosion, and effectively protecting aluminum, rubber, and plastic components. It only forms a protective layer at oxidized metal points, minimizing additive residue and extending service life up to 5 years.
Voltronic G11, on the other hand, uses traditional IAT (Inorganic Acid Technology) with inorganic additives such as silicates and phosphates. When introduced into the cooling system, the fluid quickly forms a protective coating on metal surfaces, particularly effective for engines made of copper, cast iron, and brass. However, as IAT contains inorganic substances prone to precipitation over time, Voltronic G11 requires replacement approximately every 3 years to avoid scaling and clogging of the cooling system.
Service Life and Replacement Cycles of Voltronic G12+ and G11
Voltronic High Performance Coolant G12+: Offers up to 5 years (~250,000 km) of service, reducing maintenance costs. Best suited for modern vehicles with advanced cooling systems and aluminum radiators.
Voltronic High Performance Coolant G11: Shorter lifespan compared to OAT, about 3 years (~100,000 km). Requires periodic replacement to prevent scale and maintain cooling efficiency. With IAT technology, G11 provides fast protection, making it suitable for vehicles using traditional metals such as cast iron, aluminum alloys, and brass.
Pros and Cons of Voltronic G12+ and G11
Voltronic High Performance Coolant G12+ (OAT)
Pros:
- Long-term protection: Organic additives provide sustainable corrosion resistance for up to 5 years or 250,000 km, saving time and maintenance costs.
- Effective heat dissipation: With a boiling point of up to 129°C and stable thermal conductivity, G12+ maintains ideal engine temperature even under extreme conditions.
- Low scaling risk: OAT contains no silicates or phosphates, which often cause precipitation, keeping radiators clean and efficient.
- Safe for non-metal components: G12+ is compatible with aluminum, plastics, and rubber, commonly found in modern radiators and hoses, ensuring better durability.
- Pre-mixed: Ready-to-use solution without the need for additional dilution.
Cons:
- Less suitable for vehicles with traditional cooling systems using copper, cast iron, or brass.
- Must not be mixed with other coolants (e.g., IAT) to avoid sludge formation and system blockages.
>> Read more: Voltronic G12+ Pre-Mixed Coolant
Voltronic High Performance Coolant G11 (IAT)
Pros:
- Immediate protection: Quickly forms a strong protective layer against corrosion and rust on metal surfaces.
- Ideal for older vehicles: Works best with traditional metal-based cooling systems, maintaining stable performance.
- Convenience: Pre-mixed solution, ready to pour without additional water.
- Cost-effective: More affordable than advanced coolants, suitable for frequent maintenance.
Cons:
- Shorter lifespan: Requires replacement every 3 years (~100,000 km) due to traditional additive technology.
- Scaling risk if overdue: Extended use can cause additive precipitation, clogging radiators and reducing cooling efficiency.
>> Read more: Voltronic G11 Pre-Mixed Coolant
Frequently Asked Questions
1. Do Voltronic G12+ and G11 need to be diluted?
No. Both are pre-mixed coolants, factory-blended to the correct ratio. Simply pour directly into the reservoir—no dilution required.
2. Should I choose G12+ or G11?
The choice depends on your vehicle type, cooling system materials, and usage needs:
- Voltronic G12+: Best for modern vehicles with advanced aluminum-based cooling systems, frequent long-distance driving, and users who prefer longer replacement cycles. With OAT technology, it offers superior long-term corrosion protection and up to 5 years/250,000 km lifespan.
- Voltronic G11: Suitable for vehicles with traditional metals such as copper, brass, and cast iron. Provides fast protection at lower cost, ideal for regular maintenance cycles.
3. Can G11 be mixed with G12+?
No. Mixing G11 (IAT with silicates/phosphates) and G12+ (OAT without these substances) may cause chemical reactions leading to sludge, clogs, and reduced cooling efficiency. Always flush the system before switching technologies.
4. How often should coolant be replaced?
Voltronic G12+: Every 5 years or ~250,000 km.
Voltronic G11: Every 3 years or ~100,000 km.
Follow the recommended cycles to maintain efficiency, prevent overheating, corrosion, or scaling.
5. Where to buy genuine Voltronic coolant?
Purchase only from authorized dealers or official distributors, such as Express Center, to ensure authenticity, proper labeling, and warranty support.
Avoid unverified sources as counterfeit coolants may cause sludge, overheating, or damage to metal and non-metal components in the cooling system.
Through this comparison of Voltronic G12+ and G11, it is clear that each has distinct advantages, manufactured to premium standards and imported directly from Germany. To maximize cooling and protection, users should carefully consider their vehicle’s cooling system materials and production year before selecting the right coolant. Lastly, always replace coolant on schedule to ensure peak performance and extended engine life.
UNIDRAGON GROUP
Address: 2nd Floor, 108 Nguyen Thanh Son, Cat Lai Ward, Ho Chi Minh City
Website: www.unidgroup.vn
Email: harrytran@unidragon.vn / tranquanghuy.eni@gmail.com
Phone: +84 91 773 3543
