SLC-OAT LL Coolant Additive is a pure Organic Acid Technology (OAT) long-life coolant additive package engineered for modern engine and industrial cooling systems.
It provides extended corrosion protection for all common cooling system metals while maintaining high heat transfer efficiency and long service intervals.

Formulated without borates, nitrites, nitrates, silicates, phosphates or amines, SLC-OAT LL is an environmentally responsible solution designed for both OEM-grade and aftermarket coolant formulations.
When properly blended, the finished coolant meets or exceeds major international standards including ASTM, SAE, BS, JIS and GB specifications.

Key Performance Features

• Pure OAT formulation – inorganic-free for long-term system cleanliness

• Multi-metal protection – aluminum, cast iron, steel, copper, brass, solder

• Selective corrosion inhibition – organic acids form a molecular protective film only where needed

• High thermal efficiency – no insulating deposits, optimized heat transfer

• Extended service life – up to 5+ years or 200,000 km (formulation dependent)

• Excellent material compatibility – safe for rubber seals, plastics and elastomers

• Broad compatibility – stable with most OAT and HOAT coolant systems

Typical Applications

• Passenger vehicles

• Commercial vehicles and heavy-duty trucks

• Construction machinery

• Agricultural equipment

• Industrial liquid-cooled systems

Compliance & Standards (Finished Coolant)

When formulated according to recommended treat rates:

• ASTM D3306

• ASTM D4985

• SAE J1034

• BS 6580

• JIS K2234

• GB 29743.1