I have a 2012 F-350 with the 6.7l diesel engine, I have almost 14,000 miles on it and it has ran flawlessly so far. I know Jakelope works for a Ford dealership so hopefully he will chime in. I have a message that pops up on the dash that says to check the coolant additive. Is this something that I have to have the dealer do? Or can I buy the test strips and do it myself. I think I have read that it needs to be tested in two spots but not sure.
Thanks!