Problems
 

I'm thinking its about time for a new truck here's the problem I gotta late 99 f 250 with 562541 thousand original miles on her. It's starting to when I have my air on its starting to white blue smoke and has a real sweet smell like anti freeze like violent leaking into motor. My question is do y'all think its bout time for one or maybe a lesser problem somewhere??

I don't understand your post. What is the actual issue?

Could be injector cups, could be oil cooler, could be any number of things.

I'd do a little more research before you throw the towel in. With that high of milage, it probably is time to do a rebuild, but that's better than taking out a mortgage on a new truck. If you still like her, it might be worth fix'n 'er.