Technical Coolant loss, how quickly is normal?

[steveras57]

I've since topped it up to MAX and left the car idling for a few hours with the heating full blast and it hasn't dropped at all, so I am hoping it was just a rogue pocket of air that I didn't squeeze out last time. The car at least seems to do OK with the coolant having fallen below MIN, we kept tabs on the engine temp during the journey and it never went above halfway

Id do a few medium journey's of about 20miles at relatively high revs to get the temp and water pressure up to max just to be sure its staying consistent!.

 

[steveras57]

Just had another thought if after all this you find your still loosing more than you would like, it might be worth considering changing to a waterless coolant which will not pressurise the system and runs at a much lower temp with the benefit of being everlasting and never needs changing once done! not cheep but might be worth it for you!.