I've had zero problems with cooling, driving the way I do.
^ This is my peak summer grille opening.
(From: 5-minute DIY: cockpit-adjustable variable grille block (1-way))
You can see how excessive the OEM radiator size is for me. Also, I deleted the AC condenser, so radiator efficiency by area is better than it was before.
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Filled up on the weekend - best tank so far! A hair over 53 MPG US / 4.4 L/100 km.
If I'd known it was going to be that good (MPGuino resets randomly, so I never have tank data), I would have driven a little faster.
