Understand the differences between OAT and HOAT coolants to optimize your heavy fleet’s performance and longevity. Our guide ensures compliance with fluid labeling policies while minimizing downtime.
Choose the right coolant for your fleet to enhance performance and ensure compliance.
Organic Acid Technology (OAT) and Hybrid Organic Acid Technology (HOAT) coolants are critical for heavy fleet maintenance, offering distinct advantages based on your operational needs and ISO cleanliness targets.
OAT coolants are long-life, silicate-free formulations designed for extended service intervals, reducing maintenance frequency. HOAT coolants combine organic acids with silicates or phosphates for enhanced corrosion protection, ideal for severe duty conditions. Choosing the right coolant impacts equipment longevity and compliance with diesel fuel testing standards.
| Coolant Type | Additives | Service Life |
|---|---|---|
| OAT | Organic Acids | Up to 600,000 miles |
| HOAT | Organic + Silicates | Up to 300,000 miles |
Understand the key factors to consider when selecting coolants to align with oil sampling intervals and operational demands.
Follow these steps to integrate the right coolant into your fleet maintenance plan.
Evaluate engine types, operating conditions, and hydraulic ISO 32 vs 46 requirements.
Choose OAT for long-life or HOAT for enhanced protection based on fleet analysis.
Track coolant performance with regular diesel fuel testing and adjust as needed.
Proper coolant selection reduces maintenance costs and enhances fleet reliability, aligning with ISO cleanliness targets.
Reduction in engine corrosion
Decrease in cooling system failures
Improvement in engine longevity
Compliance with fluid standards
"Switching to HOAT coolant for our mixed fleet reduced cooling system failures by 60% and extended engine life, saving us thousands in repairs."
Fleet Manager, TransWest Logistics
Answers to key questions about selecting and implementing coolants for heavy fleets.
OAT coolants use organic acids for long-life protection, while HOAT coolants combine organic acids with silicates or phosphates for enhanced corrosion resistance, ideal for severe duty applications.
Mixing OAT and HOAT coolants is not recommended as it can reduce effectiveness and cause compatibility issues. Always flush the system before switching, following fluid labeling policies.
Test coolants every 6 months or per oil sampling intervals to ensure compliance with ISO cleanliness targets.
Explore additional resources to optimize your grease management strategy.
Choose between synthetic and mineral gear oils for optimal performance.
View GuideDiscover comprehensive guides for all fluid management aspects in your fleet
Choose the ideal coolant to enhance performance, reduce downtime, and ensure compliance with industry standards.
Fast coolant selection and integration
Support for coolant management
Lower maintenance costs with optimized fluids