I'm just a little over 13,000 miles on the truck and am getting a message every time I start the truck. It says "Check coolant additive level". After reading the owners manual I think I need rotunda #328-00008(antifreeze coolant ELC contamination kit). Does anybody know where I can get these test strips besides at the dealer? I would guess that these are not the average coolant test strips that can be had every where since this is a special coolant and different additives. Maybe if somebody finds these it could go in the tech folder for all to be had. It looks like this coolant is going to need a little more attention than the previous gold coolant. thank for your time, Jason