I know mixing red and green color radiator coolant is totally unacceptable, but can we mix different brands of same color - green coolant while top up?
I have filled originally with Mitsubishi coolant and then used ENOC green coolant occasionally to top up since last 1 year. Recently added Prestone green coolant to top up and now I had 3 leaks in 3 weeks. So doubting if coolant mixing could be the cause or is it a pure coincidence.