The coolant level is at 'low' in the reservoir (cold engine), I previously added a bit of distilled water to it but now want to add a proper coolant. I am not sure if I should flush the entire coolant and add new one or just top it off with the Suzuki coolant. In either case, which coolant do you guys recommend for it? The Suzuki one is a bit too expensive (1800 for 1L) and I would need 5-6 bottles of it (in case of flush).
