D12 High water temp?

I'm not sure if I have a problem or not so here goes. My 2007 Volvo VNL 465 hp looks like it's running hot. Lately it has been in the 90's here and I haul Heavy ( around 100K#). Alot of what I do is city traffic and the stop and go really heats up the water temp gauge. It will hover just under 210. When I'm pulling hard it will go up and hang on 210 but drop back to 205? It's hard to tell. Cooling fan is electric and is not giving me any codes. But I don't really hear it either. It's not noisy like the air operated ones are. All else seems normal. No alarms or shutdown lights. Could this be right? Truck will cool to under 200 while crusing even with the heavy weight while at highway speed. Don't know how old antifreeze is or what type it is but is at least 2 years old. Truck was hit in front before I bought it.

Anything here I should check for? Coolant bottle on right side is full. Left one looks empty. Don't know if that makes a difference.