I'm looking to purchase a Gen 3 or 4 CR-V. If the budget permits, I was going to try to go for a 2012+ model. I'm aware of a noise at startup with some of the Gen 4 models. I also seen some reports seen a few reports of those having low heat temperature which is remedied my a lengthy cooling system flush. I wonder how prevalent this is? Doesn't seem to be many reports, but maybe enough to be a concern. Those I've read about though, seem to happen at relatively low miles, under 50k or so. Also once the repair is done, is it unlikely that the trouble will recur?