Coolant

Delphi  OAT Coolant is a high‑performance, long‑life engine coolant specially engineered for modern passenger cars and light‑commercial vehicles, adopting advanced Organic Acid Technology (OAT) to meet the evolving thermal‑management requirements of today’s powertrains. Unlike conventional HOAT and IAT coolants that rely on silicate‑based additive packages with limited service durability, Delphi OAT coolant uses optimized organic‑acid additives to deliver outstanding long‑term protection across the entire cooling circuit.

Designed for extended drain intervals, this OAT coolant supports service life up to 250,000 kilometres or 54 months under normal operating conditions. By contrast, traditional HOAT and IAT coolants generally require replacement every 50,000 km or 2‑year service cycles. The significantly longer replacement cycle reduces repeated coolant‑change labour and material expenses, bringing lower total‑cost‑of‑ownership for vehicle owners and higher service‑shop efficiency for professional repair workshops.

This coolant provides comprehensive multi‑metal corrosion protection for diverse cooling‑system materials, including aluminium, cast iron, steel and alloy components widely used in contemporary engines and radiators. It effectively inhibits rust formation, scale deposition and cavitation erosion inside radiators, water pumps, engine blocks and heater cores. Stable chemical properties prevent additive depletion over time, helping maintain consistent heat‑transfer efficiency and avoiding localised overheating risks that can lead to engine damage.

Supplied in a practical 4‑litre packaging format, the product is well‑suited for aftermarket workshop servicing and vehicle top‑up or full‑system flush‑and‑fill jobs. It delivers reliable freeze protection in cold climates and excellent anti‑boiling performance under high‑load, high‑temperature driving scenarios such as highway cruising, towing and stop‑and‑go urban traffic.

As a premium thermal‑management fluid from Delphi, this OAT coolant complies with modern vehicle system demands. It avoids harmful silicate drop‑out issues common in older‑generation coolants, minimising the risk of water‑pump seal abrasion and component clogging. For repair professionals, selecting Delphi OAT coolant means offering customers durable cooling‑system protection that extends the service lifespan of the whole engine cooling assembly.

Key Features

• Advanced Organic Acid Technology (OAT) formulation for modern vehicle powertrains
• Extended drain service interval: up to 250,000 km or 54 months, outperforming standard HOAT / IAT coolants
• Full‑spectrum multi‑metal corrosion defence against rust, scale and cavitation erosion
• Maintains stable heat‑dissipation performance under both low‑temperature freeze risk and high‑load thermal stress
• Practical 4‑litre packaging ideal for professional aftermarket flush‑and‑fill and coolant top‑up
• Reduces service frequency and lowers overall maintenance cost for workshops and end‑users
• Minimises silicate‑related clogging and water‑pump seal wear for longer cooling‑component service life