Fan Clutch post head stud replacement

[nitroaz]

I had the puking problem with my ’05 6.0 and after many trips to the dealer they finally did both coolers and the heads. The truck is no longer puking antifreeze. My new concern is when I’m pulling grades empty or towing my travel trailer on zero grade the fan clutch engages off and on a lot and when I look at the temp guage (stock guage) I see the needle come down slightly, it my move less than a 1/16”, but I’m sure it’s moving. All this being said the truck isn’t using any antifreeze. Before I had the studs replaced and the truck was about to puke the clutch would kick in, it would puke then the clutch would run for a bit and turn off. But now it just seems to be running way more then it needs to be. Has anyone had this same situation?