I always get a good and cheap coolant ready mix from Euro car parts. http://www.eurocarparts.com/mobile/ecp/c/Nissan_Micra_1.3_1996/p/car-parts/car-lubricants-and-car-fluids/lubricant-and-fluids/anti-freeze2/?523770501&1&5a1532ae6f87dc39e24af6599c0cc7ae8f7c1e16&000397
Never let me down since 4...