Can I Use OAT Coolant Instead of HOAT? Exploring Compatibility and Risks

You know that coolant plays a crucial role in ensuring car safety. However, there are so many variations of coolants these days that becoming confused is not unusual. 

The introduction of OAT in place of HOAT only increased the confusion. Now people often wonder whether it is safe to use OAT coolant instead of HOAT.

It is better not to use OAT coolants in place of HOAT. HOAT coolant is for older model Rams, and OAT coolant is for newer models. To confirm, consult your manual or seek advice from trusted sources. Avoid mixing coolant types, as it can lead to clogs and system issues. 

Let me share my findings from a detailed study on HOAT and OAT coolants. This article will help you understand their differences and the safety issues of switching from one coolant to another.

OAT And HOAT Coolant: An Overview

Having a proper overview of the two coolants will help you understand their uniqueness. The following table will assist you in understanding the coolants:

Disadvantages of Using OAT Coolant Instead of HOAT

While Organic Acid Technology (OAT) coolant offers its share of benefits, it’s essential to be aware of potential disadvantages, especially when considering its use in place of Hybrid Organic Acid Technology (HOAT) coolant. Let’s explore these drawbacks in detail.

Compatibility Concerns

One of the primary disadvantages of using OAT coolant instead of HOAT is compatibility. HOAT coolant is formulated to work optimally with certain older model Rams, featuring a specific blend of traditional and organic additives. 

When OAT coolant, designed for newer models, is used as a replacement, compatibility issues can arise. OAT coolant may not provide the same level of protection and performance in systems designed for HOAT, potentially leading to compromised cooling efficiency and increased wear.

Corrosion And Deposit Formation

HOAT coolant is known for its effective corrosion resistance, aided by its combination of inorganic and organic additives. OAT coolant, while offering extended corrosion protection, may not provide the same level of defense against certain types of corrosion that HOAT is specifically designed to address. 

In some cases, using OAT coolant in a system that requires HOAT could lead to increased corrosion and deposit formation, negatively impacting the overall health of the cooling system.

Potential System Clogs

Mixing different types of coolant, such as substituting OAT for HOAT, can lead to potential system clogs. Reports from various automotive forums highlight instances where improper coolant mixing resulted in clogs within the cooling system. 

The unique chemical compositions of OAT and HOAT coolants may not blend harmoniously, leading to the formation of blockages that restrict coolant flow. These blockages can result in overheating, decreased performance, and even engine damage if left unchecked.

Voiding Warranty Or Maintenance Coverage

Using OAT coolant instead of the recommended HOAT coolant could potentially void your vehicle’s warranty or maintenance coverage. Manufacturers provide guidelines and specifications for coolant types to ensure optimal performance and durability. 

Deviating from these recommendations may give manufacturers grounds to deny warranty claims related to cooling system issues. It’s crucial to follow manufacturer guidelines to safeguard your warranty and ensure any maintenance or repair needs are covered.

Related Readings about Coolants:

• Can I Use Regular, Peak, or Universal Coolant Instead Of Dex Cool
• Can I Use Blue Coolant Instead Of Green
• Can I Use Antifreeze Instead Of Coolant

FAQs

Conclusion

While the allure of switching to OAT coolant from HOAT may be tempting, it’s crucial to prioritize your vehicle’s well-being.

Stick to the recommended coolant type for your model to prevent potential compatibility issues and cooling system complications and ensure your engine’s longevity and optimal performance.