ROWE HIGHTEC RADIATOR CLEANER is a powerful additive that thoroughly cleans the entire cooling system from the inside. Its concentrated formulation dissolves scale deposits and operational dirt that build up over years of service. The result is restored heat transfer and a cooling circuit that works as efficiently as it should.

Purpose and specifications

This cleaner is designed for the complete cooling system of cars, vans and light commercial vehicles before a scheduled coolant change. It removes lime scale and contamination while restoring the function of valves, thermostats and the water pump. It is a ready-to-use service additive without OEM viscosity approvals, intended purely for system flushing prior to refilling with fresh coolant.

• 0.250L container sufficient to treat one standard passenger-car cooling system
• Dissolves scale and sludge even in narrow channels and the radiator core
• Frees sticking thermostats and valves to restore correct coolant flow
• Improves heat dissipation and reduces the risk of overheating after service

When to use / change?

Use it whenever you change the coolant or notice reduced cooling efficiency, typically every 2 to 3 years in line with the coolant service interval. Add it to the warm system, let the engine run for about 30 minutes, then flush and refill with fresh coolant. It works across normal engine operating temperatures; always open the radiator cap slowly to avoid scalding. Unopened, the product keeps for approximately 5 years when stored cool and dry.

Frequently asked questions

How long do I leave it in the system?
Add it to the warm cooling system and let the engine idle for around 30 minutes, then drain, flush and refill with new coolant.

Is it safe for aluminium radiators?
Yes. It is formulated to clean modern cooling systems, including aluminium components, without aggressive attack on the metal.

Do I need to flush afterwards?
Yes. Always flush the system thoroughly and refill with fresh coolant after the cleaning cycle.

Suitable for: All water-cooled petrol and diesel vehicles. Always verify the exact approval against your vehicle's owner manual before use.