Motul Motocool Expert Hybrid Tech Coolant – 50/50 Premixed HOAT Antifreeze – 1L / 6L / 8L / 20L

Motul Motocool Expert hybrid tech coolant is a ready-to-use 50/50 premixed antifreeze engineered for modern aluminum engines and high-performance cooling systems.

Designed to maintain stable operating temperatures under load, this coolant delivers consistent heat transfer, corrosion protection, and system reliability in both street and performance applications.

Built using hybrid organic acid technology (hoat), motocool expert provides long-term protection against rust, scale buildup, and cavitation while supporting efficient cooling under demanding conditions.

Performance tier

Developed for stock and tuned vehicles requiring reliable cooling performance and long-term system protection under daily and aggressive driving conditions

Variants

1L – single bottle 
best for top-offs or small system adjustments

6L kit – standard service 
ideal for most wrx and sti coolant services
recommended for routine maintenance

8L kit – full system 
designed for complete flushes or fully drained systems
ensures full system capacity without shortage

20L – bulk size (105915)
best for shops, multiple vehicles, or frequent servicing

Features

Hybrid organic acid technology (hoat) formulation
Pre-mixed 50/50 – no dilution required
Freeze protection to -35°F (-37°C)
High boiling point (up to 275°F (135°C) in a pressurized system)
Protects against corrosion, cavitation, and scale buildup
Safe for aluminum radiators and cooling components

Fitment

Subaru WRX 2002–2026
Subaru STI 2004–2021
EJ and FA engine platforms

Compatible with stock, tuned, and built vehicles

Specifications

Type: hoat (hybrid organic acid technology)
Mixture: 50/50 premixed
Available sizes: 1 liter / 6 liter / 8 liter / 20 liter
Brand: Motul

How much do you need

Most subaru cooling systems require approximately 5–7 liters of coolant depending on model and setup

Recommended purchase: 6L kit for standard service or 8L kit for full system flush

Note

Do not mix with unknown or incompatible coolant types

For best results, perform a complete coolant flush before installation

Recommended pairings

Motul 300v engine oil
Motul gear 300 75w-90
Motul rbf 600 or rbf 660 brake fluid