Welcome to Kemitec
The Ultimate Coolant for High-Performance Cars
Kemitec is Japan’s No. 1 aftermarket coolant and antifreeze brand, trusted by motorsport professionals, performance enthusiasts, and daily drivers alike. From the racetrack to the street, our PG55 series delivers cutting-edge cooling technology, long-term protection, and environmental responsibility.
Before choosing your coolant, it’s important to understand why Kemitec’s Propylene Glycol (PG55) formula outperforms traditional Ethylene Glycol (EG) products:
Coolant Comparison: PG55 Propylene Glycol vs. Traditional Ethylene Glycol
| Feature | Propylene Glycol (PG) | Ethylene Glycol (EG) |
|---|---|---|
| 🧪 Toxicity | ✅ Non-toxic | ❌ Toxic |
| 🌿 Eco-Friendliness | ✅ Biodegradable | ❌ Harmful to environment |
| 🔥 Thermal Stability | ✅ High | Moderate |
| 🌡️ Boiling Point | ✅ Higher (in 55% blends) | Lower |
| 💧 Heat Transfer | Slightly lower (negligible) | ✅ Slightly better |
| 🏎️ Motorsport Proven | ✅ Used in Super GT, D1GP | No notable motorsport use |
| 💰 Cost | Higher | ✅ Lower |
Why Choose Kemitec?
1. The Golden Ratio – 55:45
Our unique formulation of 55% propylene glycol and 45% ultra-purified water ensures superior heat absorption and dissipation, keeping engines cool under extreme conditions.
Want to understand why the Golden Ratio (55:45) makes a difference?
→ Read the full explanation in our blog
2. Proven in Motorsports
Used in Super GT, D1GP, and Japan Road Race, the PG55 series is trusted by top motorsport teams for consistent performance and engine protection.
3. Eco-Friendly and Safe
Made with non-toxic, biodegradable propylene glycol, Kemitec coolants are safer for people, pets, and the environment.
4. Ultra-Purified Water Technology
Using 100% deionized, ultra-purified water, our coolant eliminates impurities that can cause scaling, corrosion, and electrolysis, extending your engine's lifespan.
5. Improved Fuel Efficiency & Cost Savings
Stable engine temperatures reduce stress on components, enhancing fuel efficiency and reducing long-term maintenance costs.
6. Advanced Organic Acid Technology (OAT)
Our formula is free from nitrites, phosphorus, and amines, ensuring long-lasting corrosion resistance for aluminum, cast iron, and mixed-metal engines.
The PG55 Series: Designed for Every Engine
| Product | Recommended Use | Key Features |
|---|---|---|
| PG55 RC | High-performance and motorsport vehicles | 55:45 golden ratio, proven in Super GT and D1GP |
| PG55 HQ | Everyday vehicles and general street use | 50:50 balance, eco-friendly, cost-effective |
| PG55 NR358 | Diesel and cast iron engines, heavy-duty use | 55:45 formula with enhanced rust inhibitors |
| PG55 Vintage | Classic and antique gasoline engines | Gentle protection, compatible with old materials |
Which PG55 to Choose?
Not sure which PG55 coolant is right for you? Find the best match below:
For High-Performance & Motorsports Cars
Best Choice: PG55 RC
Why? Designed for racing, track use, and tuned performance vehicles.
Perfect for: Nissan GT-R, Silvia (S13/S14/S15), 86/BRZ, WRX STI, Supra, Corvette, Mustang, and other JDM & high-performance cars.
Key Benefit: Motorsports-proven cooling with the Golden Ratio (55:45).
For Daily Drivers & General Use
Best Choice: PG55 HQ
Why? A reliable, eco-friendly coolant balancing performance and affordability.
Perfect for: Honda, Toyota, Nissan, Mazda, Subaru, BMW, Mercedes, Ford, Chevy, and most passenger cars & SUVs.
Key Benefit: Affordable while maintaining PG55's core performance.
For Diesel & Heavy-Duty Vehicles
Best Choice: PG55 NR358
Why? Specially formulated for diesel engines and cast iron blocks, offering extra corrosion protection.
Perfect for: Toyota Land Cruiser, Nissan Patrol, Diesel Trucks, Heavy-Duty SUVs, and older JDM vehicles with cast iron blocks.
Key Benefit: Enhanced rust inhibitors protect cast iron engines.
For Classic & Vintage Cars
Best Choice: PG55 Vintage
Why? A gentle, cost-effective solution designed for older engines.
Perfect for: Datsun 240Z, AE86, Toyota Crown, and other classic European or American models.
Key Benefit: Protects old engines while keeping maintenance affordable.
Why PG55 RC Stands Out
- ✅ Optimized for Performance – The Golden Ratio (55:45) ensures maximum cooling efficiency.
- ✅ Proven in Motorsports – Used in Super GT, D1GP, and road racing.
- ✅ Advanced Engine Protection – OAT formula prevents scaling and corrosion.
- ✅ Eco-Friendly & Safe – Non-toxic, biodegradable, and responsible performance.
- ✅ Freeze & Boil Protection – Operates from -40°F (-40°C) to 224.6°F (107°C).
Tip: For the best results, always perform a full coolant flush before switching to PG55!
Shop the PG55 Series Now
