1. coolant concentrate is a glycol serial product developed for cooling system of imported and homemade high class cars with boiling-proof, dirty-proof and anti-rust functions.

2. The unique metallic additives inside prevents radiator from corroding and rubber ageing.

1. After the engine cool down, turn on the radiator cover, open the outlet valve, release all the old coolant.

2. Wash the cooling system with radiator cleaner or clean water, drain out all the cleaning liquid from radiator, engine cylinder, and collecting rubber tanks.

3. Close the outlet, fill the radiator with anti-freeze coolant.

4. Start the engine, heat the car for 10 minutes, if there's decrease of the coolant, fill again.