Braking my head

Alright mechanics good afternoon starting off freightliner century detroit 60 series 12.7 . Prior you my new inframe rebuild which I got 5k miles on my my temperature driving under load even pulling from 0 to start driving will start gradually to climb up some times when pulling a load uphill it goes all the way to 211 to 215 I hit fan clutch at at about 205 and it will still climb will gradually start coming down a little . It's got fresh inflame with new head , new radiators , new waterpump about 1 year ago new thermostats new temp sensor new fanclutch as well I made sure no air pockets are present I'm loosing my mind already new temp gauge as well

 

The problem is that temp fluctuations like that aren't normal and I'm afraid of overheating the fan clutch kicks on about 208

 

Running flat under load at times it stays at 187 but jumps to 200 easy

 

Funny you say that I just replaced turbo 2 days ago brand new as well