Did some searching on coolant questions,, it seems the common answer
for a coolant to purchase at auto parts store or Wally World is
ZEREX G-05. ANY OTHER SUGGESTIONS BEFORE I PURCHASE ??

ANY NEW INFO ??

I will be replacing about 2 gallons, mixing with the origianal stuff
after filtering.

Doing this because I found sediment/particulate in lower rad hose.
Not sure what it is but I don't think I want it in my system.
Maybe I should replace all coolant, not just filter the old ??

 

That is the only HOAT type coolant I could find that was easy to purchase.

 

I believe that the Zerex G-05 formulation is the factory fill, and is approved by DC. I don't think you could go wrong by using it, in fact I don't think I would use anything else.

 

Drain, flush, and refill entire system with new coolant. Additives in the coolant wear out. It is better to change it all.
I replaced the coolant with Shell Rotella ELC 60/40 predilute. It seems like a great coolant, and I just have to add a rejuvenator once per year I believe.