coolant qestions

I am doing a egr delete, what coolant should i put back in and where should i get ? heard something about using CAT coolant because it has no silicates? i also plan on running a coolant filter

I used the cat ratd elc coolnt when I did mine. If you go that route make sure you flush the block well first before adding the elc. I bought global from a local truck stop which is Peaks diesel coolant full strength and cat elc rated. Its orange also so its easy to see in the degas bottle.