Putting new expansion tank, tstat and rad houses on my 03. It currently has green rad fluid in it. The exp tank says it should have the orange stuff in it. Should I stay with green since it is in currently?

 

I would.

 

I'd take advantage of the opportunity and flush the system then install the correct fluid.

 

Remove the sticker on the expansion tank.

 

Yea it has orange in it, I had topped it off a few times with GREEN, maybe a few cups full. The orange that is coming out is very clean. Must have been done in the last year or so. I will go back and get orange.

 

There are a number of posts about coolant types, mixing types is a no-no, since you are replacing many of the cooling components I'd flush the whole system to ensure you have no gumming of the system.

I use Orange Dex-cool in the Jag, My Jeep runs green I always double check which bottle I grab if topping off, Also use distilled water for mixing as this reduced rad/component corrosion.

 

I went with the orange.