Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclaimer here.
Picking the right coolant for your Infiniti G37 matters for everyday reliability and long-term engine health. The wrong formulation can lead to corrosion, poor heat transfer, or premature component wear, while the right fluid helps maintain temperature control and protects cooling-system parts. This guide covers seven shortlisted coolants that are appropriate for the G37 and summarizes the evaluation criteria used to vet them, including corrosion inhibitors and thermal performance. Read on to see which formulations fit common service approaches and coolant-change intervals.
Looking for other parts? See all Infiniti G37 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Zerex Asian Vehicle Blue 50/50 Prediluted Antifreeze/Coolant (1 gal) |  |
| Most Popular A crowd favorite that many people choose with confidence | Engine Ice TYDS008 High Performance Coolant, 0.5 Gallon |  |
| Best Quality Built to a higher standard if you want something more solid | Toyota Genuine Antifreeze/Coolant (00272-1LLAC) |  |
| Best Budget The cheapest option that still gets the job done reliably | PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant, 1 Gal |  |
| Most Sold A high-volume bestseller chosen again and again | Zerex Dex-Cool Antifreeze/Coolant 50/50 Ready-to-Use, 1 Gallon |  |
| Best Value for Money The sweet spot between price and what you get | Mopar 10-Year/150,000-Mile 50/50 Premixed Coolant (Prediluted) |  |
| Best Overall The best all-around choice for most situations | Genuine 00272 SLLC2 Engine Coolant / Antifreeze |  |
1. Zerex Asian Vehicle Blue 50/50 Prediluted Antifreeze/Coolant (1 gal)
| Formula | HOAT (Hybrid Organic Acid Technology) |
|---|---|
| Mix | 50/50 Prediluted Ready-to-Use |
| Chemistry exclusions | Silicate-free, Borate-free, no amines or nitrites |
| Intended vehicles | Asian makes such as Infiniti, Honda, Nissan, Hyundai, KIA |
Zerex Asian Vehicle Blue is a ready-to-use, 50/50 prediluted antifreeze designed for Asian makes and fits the cooling requirements of the Infiniti G37 when a blue, silicate- and borate-free HOAT formula is specified. You pour it straight into the coolant reservoir or radiator during a top-off or after a full system flush without needing to mix concentrate. The formula includes phosphate corrosion inhibitors to protect aluminum radiators, water pumps, and other metal components common on the G37 and is engineered to resist scale and deposits over long service intervals. Being factory-formula compatible makes it a practical replacement for scheduled coolant changes and reduces worry about chemical mismatch. The main limitation is that it is specifically the blue HOAT chemistry, so it must only be used where the G37 owner’s manual calls for that type; it is not a universal coolant for all Infiniti model years or coolant chemistries. Also, prediluted fluids occupy more storage volume than concentrates if you like to keep spare supply on hand.
Best for: Reliability-focused buyers who prioritize using the chemistry recommended for their Infiniti G37 to minimize corrosion and long-term cooling-system problems.
Less Ideal for: Drivers who need a universal coolant for multiple makes with differing chemistries or who prefer to store concentrated fluid for longer-term spares.
- Prediluted 50/50 formula ready to use with no mixing required.
- HOAT chemistry formulated without silicates or borates for compatibility with Asian-manufacturer specs.
- Phosphate additive helps protect aluminum radiators, water pumps, and other cooling-system metals.
- Available in a one-gallon container suitable for a full coolant service or multiple top-offs.
- Only appropriate where the Infiniti G37 requires a blue HOAT, so it is not suitable if a different coolant chemistry is specified.
- Prediluted product takes more storage space than concentrate if you want to keep extras on hand.
Verdict A factory-compatible, ready-to-use blue HOAT coolant that’s a dependable choice for Infiniti G37 owners when that chemistry is called for.
2. Engine Ice TYDS008 High Performance Coolant, 0.5 Gallon
| Capacity | 0.5 Gallons |
|---|---|
| Phosphate Free | Yes |
| Base | Propylene Glycol |
| Boil Protection | Up to 256F |
Engine Ice TYDS008 is a premixed, phosphate-free coolant designed for powersports and high-performance engines but also applicable where a high-heat-capacity coolant is desired. It is used like any ready-to-use antifreeze: drain or top up the coolant system and refill without mixing. Key features include propylene glycol formulation, OAT-style corrosion inhibitors, and advertised boil and freeze protection tailored to powersports applications. In practice the product delivers lower operating temperatures versus standard coolants, which helps maintain consistent engine performance under sustained load. Its corrosion protection is claimed to be suitable for common cooling-system metals including aluminum and cast iron. Limitations to consider for an Infiniti G37: this is a motorcycle/powersports–focused formula so check vehicle service manual compatibility before swapping, and the 0.5 gallon bottle may require purchasing additional volume for a full system refill. Also it is premixed, so you cannot adjust concentration for different freeze point needs. If you need a straightforward, performance-oriented ready-to-use coolant that prioritizes temperature control, this is a practical option.
Best for: Convenience-driven buyers who prioritize a ready-to-use, performance-oriented coolant that reduces operating temperature and simplifies maintenance tasks.
Less Ideal for: Owners who require a coolant specifically formulated and approved for Infiniti G37 factory specifications or those who need to tailor concentration for severe cold climates should consider vehicle-specific, manufacturer-recommended alternatives.
- Ready-to-use premixed formula for easy top-up or refill without measuring.
- Propylene glycol base and OAT inhibitors claim improved heat capacity and corrosion protection for aluminum and other common metals.
- Widely reported to lower operating temperatures, helping performance under sustained loads.
- 0.5 gallon volume may be insufficient for a complete coolant change on a G37 without buying extra.
- Formulated primarily for powersports so vehicle-specific compatibility should be confirmed before use.
- Premixed product does not allow concentration adjustments for extreme freeze conditions.
Verdict A convenient, performance-focused premixed coolant that lowers operating temperatures but check fitment and buy extra volume for a full G37 system refill.
3. Toyota Genuine Antifreeze/Coolant (00272-1LLAC)
| Brand | Toyota |
|---|---|
| Model | Antifreeze Coolant |
| Manufacturer Part Number | 00272-1LLAC |
| Concentrated | Yes |
This Toyota Genuine Antifreeze/Coolant is a concentrated, vehicle-specific coolant sold as a factory-quality replacement fluid. It is typically mixed to the correct concentration and added during routine cooling system service or when topping off after repairs. The formula is designed for rust and corrosion prevention and to reduce engine temperatures under normal and spirited driving. Being a Toyota-branded, vehicle-specific product means consistent chemistry and predictable compatibility with systems built for similar manufacturer specifications. Practical benefits include long-term corrosion protection and the reliability of a factory-formulated coolant that users report matches dealer-supplied fluid. Limitations are that this is a manufacturer-specific concentrate, so you must confirm compatibility with an Infiniti G37 cooling system and mix it correctly before use; it does not come pre-mixed and may be overkill if you want a generic universal coolant or a ready-to-use bottle for quick top-offs.
Best for: Performance-oriented buyers who prioritize factory-consistent fluids and predictable thermal protection for spirited driving and long-term engine care.
Less Ideal for: Drivers who prefer pre-mixed, ready-to-use coolants or those seeking a universal off-the-shelf coolant without checking manufacturer compatibility should consider alternatives.
- Factory-quality, manufacturer-formulated coolant for consistent chemistry
- Concentrated formula equals more usable volume per bottle when mixed
- Designed to prevent rust and corrosion for long-term cooling system protection
- User reports indicate the product matches dealer-supplied coolant in composition
- Sold as a concentrate so it requires correct mixing before use
- Vehicle-specific branding means you must verify compatibility with Infiniti G37 cooling specifications
Verdict If you want factory-formulated, high-quality coolant chemistry you can rely on for performance driving, this Toyota concentrate delivers consistent protection but requires correct mixing and compatibility confirmation for the Infiniti G37.
4. PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant, 1 Gal
| Dilution | 50/50 prediluted |
|---|---|
| Intended region | North American vehicles |
| Volume | 1 gallon |
| Formula type | Extended life OAT |
This PEAK OET 50/50 prediluted coolant is an easy, budget-friendly option for routine coolant service or topping off the Infiniti G37. It is formulated as an orange organic acid technology (OAT) extended-life coolant intended for North American vehicles and is packaged ready to pour so you do not need to mix concentrate. In use it protects against rust and corrosion and simplifies maintenance during a flush and fill or a quick reservoir top-up. The bright color also helps spotting leaks. Limits to consider are compatibility specifics for some Japanese imports and manufacturer recommendations for the G37; always check your Infiniti’s coolant spec before switching. This product is aimed at straightforward maintenance rather than specialty performance applications, and it will not substitute for a coolant explicitly required by a dealer service specification if Nissan/Infiniti calls for a different formula.
Best for: Budget-conscious owners looking for a low-effort, ready-to-pour coolant for routine maintenance and top-offs who prioritize convenience and value.
Less Ideal for: Drivers who require dealer-specified Nissan/Infiniti factory-replacement coolant or who need a performance coolant for track or heavy-duty use should consider manufacturer-recommended alternatives.
- Ready-to-use 50/50 prediluted formula saves time and eliminates mixing errors
- Extended-life OAT formulation designed to reduce rust and corrosion during long service intervals
- Clear orange color makes leaks and fluid level checks easier
- Backed for use in North American Ford, Chrysler, and GM applications indicating broad automotive compatibility
- Not guaranteed to match every manufacturer coolant specification so confirm Infiniti G37 compatibility before use
- Prediluted product offers less flexibility if a custom dilution is required
Verdict A convenient, wallet-friendly prediluted extended-life coolant suited for routine G37 maintenance when the Infiniti coolant spec allows it.
5. Zerex Dex-Cool Antifreeze/Coolant 50/50 Ready-to-Use, 1 Gallon
| Brand | Valvoline |
|---|---|
| Model | Dex-Cool |
| Voltage | 12 Volts |
Zerex Dex-Cool is a ready-to-use 50/50 antifreeze that supplies long-term corrosion protection for modern cooling systems using organic acid technology. It is typically used to top off or refill a vehicle cooling system and is suitable where an orange Dex-Cool style coolant is specified. The formula is silicate and phosphate-free and is designed to protect aluminum and other metal components from rust, scale, and deposits while resisting freeze and boil conditions in everyday driving. Practical benefits include no mixing required, compatibility with systems that require OAT Dex-Cool chemistry, and extended protection that helps reduce the need for frequent coolant changes. Important limitations are that this is a specific OAT orange coolant type, so it must only be used where the Infiniti G37 calls for Dex-Cool compatible fluid; mixing with incompatible coolant chemistries can cause problems. Also the product is sold as a single-gallon container, which may require multiple bottles for a full system flush on some vehicles.
Best for: Risk-averse mainstream buyers who prioritize using factory-spec coolant chemistry and want a ready-to-use product that reduces maintenance uncertainty for routine topping off or scheduled coolant service on their Infiniti G37.
Less Ideal for: Owners looking for a universal or hybrid coolant solution or those who need a concentrated product to mix themselves should consider alternatives.
- Pre-mixed 50/50 formula ready to pour with no dilution needed
- Organic Acid Technology protects aluminum and other metals from corrosion and scale
- Formulated to meet manufacturer requirements for vehicles that specify Dex-Cool chemistry
- Extends service intervals compared with conventional coolants
- Limited to vehicles that require Dex-Cool or OAT orange coolant and not suitable for all coolant types
- Sold in single 1 gallon units which may not be enough for a full system flush on some cars
Verdict Choose Zerex Dex-Cool for your Infiniti G37 if the manufacturer calls for Dex-Cool OAT fluid and you want a convenient, ready-to-use option that protects modern cooling system metals.
6. Mopar 10-Year/150,000-Mile 50/50 Premixed Coolant (Prediluted)
| Prediluted | 50/50 premixed |
|---|---|
| Technology | OAT (Organic Acid Technology) |
| Service life claim | 10 years / 150,000 miles |
| Meets | ASTM D3306 – Type 3 |
This Mopar 50/50 premixed coolant is a ready-to-use organic acid technology formula designed for long-life corrosion protection and temperature stability. It is typically used as a direct refill or full system change where the manufacturer specifies OAT coolant; being premixed saves time because no dilution is required. Notable features include the 10 year/150,000 mile service life claim and compatibility with Mopar-specified systems. In practice the coolant provides corrosion control for aluminum and mixed-metal cooling systems and maintains freeze and boilover protection without needing to add water. Limitations are that it is a vehicle-specific factory-type coolant so it must not be mixed with different coolant chemistries, and users should confirm compatibility with the G37 before switching to avoid sludge or seal issues. Packaged as a single container, it is convenient for DIY top-offs or system fills but you will need the correct volume for a full flush and refill.
Best for: A practical optimizer looking for a factory-quality, ready-to-use coolant that minimizes hassle and maintenance frequency while keeping service straightforward.
Less Ideal for: Buyers who need a universal coolant or who frequently mix different coolant types should avoid this and choose a neutral or vehicle-agnostic product instead.
- Premixed 50/50 formula eliminates the need to dilute with water
- Factory-quality OAT formulation intended for long service intervals
- Packaged for easy pouring and direct system top-off or refill
- Not compatible with other coolant chemistries so mixing can cause sludge or damage
- Sold as single containers so multiple units may be required for a full system change
Verdict A convenient factory-spec premix that delivers long-life protection if you use it alone and confirm chemical compatibility with your Infiniti G37.
7. Genuine 00272 SLLC2 Engine Coolant / Antifreeze
| Manufacturer Part Number | 00272SLLC2 |
|---|---|
| Brand | Genuine |
| ASIN | B0071N5DM4 |
This Genuine 00272 SLLC2 engine coolant is a factory-quality pink antifreeze sold as a single-quantity container and intended to maintain stable engine temperature and provide corrosion protection. It is typically used during routine coolant flushes or top-ups to restore the cooling system to the manufacturer-recommended specification. Notable features include a bittering agent to discourage ingestion and a formula trusted by vehicle manufacturers for consistent heat transfer and rust inhibition. In practice this coolant helps prevent overheating and reduces long-term corrosion when replaced on schedule, and the pourable container makes refills straightforward. The main limitation is that it is a brand-specific formula originally supplied for Toyota and Lexus applications, so confirming compatibility and proper service intervals for an Infiniti G37 is important before use. Some buyers also note the product costs more than generic alternatives, reflecting its factory-aligned formulation.
Best for: Balanced buyers who prioritize factory-quality fluids and predictable cooling-system protection and who maintain their vehicle on a regular service schedule.
Less Ideal for: Drivers seeking the cheapest aftermarket coolant or those who prefer a universal, vehicle-agnostic formula without checking model compatibility first.
- Factory-quality formulation designed to control engine temperature and inhibit corrosion
- Contains a bittering agent to discourage accidental ingestion
- Easy-to-pour single-quantity container suitable for routine coolant service
- Formulated for Toyota/Lexus applications which may limit direct fit guidance for Infiniti G37 owners
- Higher cost than many aftermarket coolants
Verdict A factory-quality Toyota/Lexus coolant offering reliable temperature control and corrosion protection, but check compatibility for the Infiniti G37 before choosing it.
Choosing the Right Infiniti G37 Coolant: Key Factors to Consider
Corrosion Inhibitor Chemistry
The type of corrosion inhibitors a coolant uses determines how well it protects aluminum engine parts, radiators, and heater cores over time. Organic acid technology, silicated inhibitors, and hybrid formulations each behave differently; some offer long-life protection while others rely on silicates for fast initial protection.
Choosing the right chemistry matters because incompatible inhibitors can accelerate pitting or cause deposits. Look for fluids that explicitly state suitability for aluminum systems and explain how often the inhibitor package needs replenishing during maintenance.
Thermal Transfer and Boiling Point
A coolant's ability to transfer heat and its boiling point under pressure affect engine temperature stability and resistance to overheating. Better thermal conductivity and a higher effective boiling point help the cooling system manage high loads and stop localized boiling in hot spots.
Consider how the coolant performs under expected driving conditions for the G37, such as highway cruising or spirited driving. Fluids with clear thermal-performance data give you a realistic sense of how they will behave in service.
Compatibility With Seals and Hoses
Some coolant chemistries can cause swelling or hardening of rubber seals, gaskets, and hoses if they are not compatible. Over time, incompatible fluids can lead to leaks or component failures that are costly to repair.
When selecting a coolant, check manufacturer guidance on elastomer compatibility and whether a pre-flush or hose inspection is recommended. Products that minimize interaction with common seal materials reduce the risk of post-service leaks.
Concentration and Dilution Requirements
Coolants are sold either pre-diluted or as concentrated formulas that require mixing with distilled water. The required concentration affects freeze and boil protection as well as inhibitor strength.
Choosing a product that matches how you plan to service the car simplifies maintenance. If you prefer a ready-to-use option, avoid concentrates; if you mix yourself, measure the ratio to meet freeze/boil targets and maintain inhibitor efficacy.
Service Interval and Longevity
Different formulations advertise different service lives, ranging from short-term to long-life packages. Longer intervals can lower maintenance frequency but may rely on specific inhibitor chemistries that need monitoring.
Balance the convenience of extended intervals against the need for periodic coolant condition checks. Consider how long you keep the vehicle and your willingness to perform or schedule coolant-condition inspections.
Ease of Use and Maintenance Considerations
Practical factors such as whether the coolant darkens, leaves deposits, or requires a full system flush affect maintenance complexity. Some formulations recommend a complete flush before switching to ensure new inhibitors are not contaminated.
Think about how frequently you perform cooling-system service and whether you have the tools to flush and refill properly. Choosing a coolant that aligns with your maintenance habits reduces the chance of mixing incompatible chemistries.
FAQ
How often should I change the coolant in my Infiniti G37?
Service intervals vary by coolant chemistry and your driving conditions, but many modern formulations recommend checks every 2 years and replacement every 3 to 5 years. Heavier use or older cooling systems may need more frequent inspection. Follow the vehicle manufacturer's maintenance guidance when possible.
Can I mix different coolant types during a coolant flush?
Mixing different inhibitor chemistries is usually discouraged because incompatible formulations can reduce corrosion protection or create deposits. If you are switching types, a thorough system flush and cleaning is often recommended to remove residual fluid before refilling.
Do I need to dilute concentrated coolant or buy pre-mixed?
Concentrated coolants require mixing with distilled water to achieve correct freeze and boil protection and inhibitor concentration. Pre-mixed products are ready to use and eliminate measuring errors. Choose based on whether you are comfortable accurately diluting and testing concentration.
Will coolant choice affect my car's heater performance?
Coolant with proper thermal-transfer properties and correct concentration helps the heater core transfer warmth efficiently. Contaminated or degraded coolant can reduce flow or form deposits that impede heater performance, so maintaining coolant condition supports consistent cabin heating.
Is a coolant flush necessary when replacing coolant in the G37?
A coolant flush is often recommended when changing inhibitor types or when fluid is discolored or contaminated. Flushing helps remove deposits and old inhibitors that could interact with the new fluid. For routine top-offs, a full flush may not be required but periodic system checks are still advisable.
How We Chose the Best Infiniti G37 Coolant
We focused on coolant formulations and service needs specific to the Infiniti G37 platform. Key evaluation criteria included corrosion inhibition chemistry because compatible inhibitors protect aluminum heads, blocks, and heater cores; thermal conductivity and boiling point characteristics to gauge heat-transfer efficiency under load; compatibility with G37-compatible seals and hoses to avoid premature degradation; recommended service intervals and long-life claims to assess maintenance frequency; and clarity on whether a product requires pre-dilution or is sold ready-to-use for practical installation. We excluded fluids that lack clear technical specifications, those formulated only for heavy-duty diesel applications, and products without manufacturer guidance on compatibility with modern aluminum engines. The editors prioritized technical transparency and formulations that align with typical Infiniti cooling-system materials and service practices.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing coolant for an Infiniti G37 is about matching inhibitor chemistry, thermal performance, and maintenance preferences to your vehicle's cooling-system materials and how you drive. Prioritize fluids that explicitly state compatibility with aluminum engine components and offer clear guidance on dilution and service intervals. Accept tradeoffs between convenience and longevity: ready-to-use fluids simplify service, while concentrated long-life formulas can reduce frequency of changes but may require stricter adherence to flushing procedures. Regular inspection and following recommended concentrations will keep the cooling system functioning well.
Explore More:
- Check out all Infiniti G37 parts & accessories
- Explore Fluids & Chemicals
- Browse all Accessories
