Maximum Cooling. Zero Compromise.
The Penrite Race Coolant Inhibitor is a concentrated corrosion inhibitor designed specifically for high-performance and motorsport applications.
Formulated to provide superior protection for all modern performance engines — including Honda Civic Type-R FK8 / FL5, Subaru WRX, Toyota GR Supra, and other track-driven vehicles — it ensures efficient heat transfer and long-term system reliability.
Concentrated Race Formula
Designed for competition use where glycol-based coolants are not permitted. Ideal for racing, time attack, and track day vehicles.
Maximum Heat Transfer Efficiency
Improves cooling system performance by reducing surface tension — allowing coolant to flow faster and dissipate heat more effectively.
Corrosion & Cavitation Protection
Provides exceptional protection for aluminum, magnesium, cast iron, brass, copper, and solder alloys commonly found in performance radiators.
Mixes with Water or Used Neat
Can be mixed at 7.5% to 10% concentration with demineralized water, or used as a top-up fluid in race-prepped systems.
Environmentally Safer Formula
Free of glycol, silicate, phosphate, and amine compounds, making it non-toxic and biodegradable.
Compatible with All Performance Cooling Systems
Suitable for modern turbocharged, supercharged, and naturally aspirated engines.
Product Name: Penrite Race Coolant Inhibitor
Size: 1 Litre
Type: Concentrated Inhibitor (Non-Glycol)
Mix Ratio: 7.5%–10% with Demineralised Water
Color: Green
Made in: Australia
Penrite is Australia’s most trusted name in high-performance automotive lubricants and fluids.
Their Race Coolant Inhibitor is developed with motorsport-grade additives to ensure stability, consistency, and ultimate engine protection under extreme temperatures.