HIGHTEC ANTIFREEZE COOLANT AN 18 LC is a premium long-service coolant concentrate based on monoethylene glycol. Built on modern long-life additive technology, it delivers high corrosion and frost protection and keeps cooling passages clean across extended drain intervals. The nitrite-free, amine-free and phosphate-free chemistry is gentle on seals and engine metals.

Purpose and specifications

Developed for the cooling systems of modern passenger cars and commercial vehicles with aluminium engines and cast iron engines. It meets ASTM D3306, ASTM D6210, BS 6580:2010 and SAE J1034, and carries broad approvals including VW TL L(G12Evo), VW TL J(G13), MB 325.3, MAN 324 Si-OAT, Cummins CES 14603 and Toyota Long Life Coolant 1WW.

• 5L container of concentrate to mix with water for a full cooling system
• When mixed 1:1 it protects to approximately -37 C for reliable cold starts
• Long-life corrosion and cavitation protection against scale and deposits
• Wide approval coverage makes it an efficient single fluid for mixed fleets

When to use / change?

Choose it when refilling or replacing the coolant in vehicles calling for a G12Evo or G13 long-life fluid. As a long-service coolant it is generally renewed every 3 to 5 years or per the manufacturer interval. Mixed with demineralised water it performs across a range of about -37 C to +120 C. Sealed and stored cool and dry, shelf life is approximately 5 years.

Frequently asked questions

How do I dilute the concentrate?
A 1:1 mix with clean demineralised water gives frost protection to roughly -37 C; use more concentrate for harsher winters.

What colour is this coolant?
It is green, reflecting its long-life additive technology.

Is it suitable for both cars and trucks?
Yes. It carries passenger car and commercial vehicle approvals from VW, Mercedes-Benz, MAN, Cummins and others.

Suitable for: Volkswagen Passat, Audi A6, BMW 5 Series, Mercedes-Benz E-Class, Toyota RAV4, MAN trucks. Always verify the exact approval against your vehicle's owner manual before use.