Well, like I said, I'm not advocating AGAINST it. Heck, I might even give it a try. I just wanted folks to realize the pros and cons of this decision is all. In my rig, prior to having changed out the thermostat and fan clutch, temps into the 230s while towing even the super light loads I run weren't uncommon if heading up a grade. With a lower psi cap, it'd be a little too close for comfort, especially since the temp on the gauge may not be the hottest point in the system. Now, though, it's no big deal. So, I guess my general advice would be that a low psi cap is a good idea AFTER you know your cooling system is up to *****.
Mike