How can I keep my 2.9 cool?

[PetesPonies]

however a proper operating 2.9 radiator should keep a proper operating 2.9 engine cool. So you decide where the problem is.

I'm a bit surprised no one has asked about the fan cooling clutch. If the truck goes down the highway at normal temps (50mph+) and is good? But you get it into town for stop and go driving or idle...and the temp goes to high? That's a clear sign the cooling fan clutch is on the way out. It's designed to tighten a 'clutch' on the pully/fan unit to increase the RPM as the temp increases. It's a simple spring kinda like the old school carb's use for the choke. This one just tightens/loosens a clutch pack for the fan.

Bingo . . . no reason for all the bandaids, just find out what's wrong. A 2.9 is not hard to cool.