I know this topic has been beaten to death but I still don't get it. I am getting ready to change out my anti-freeze myself. My manual for a 400 cummins ISL states to use a anti-freeze with the additives ready mixed in. I phoned around and I can find extended life as well as regular anti-freeze but have to add in the additives seperatly. How do you use the test strips and how to alter the ratio if required? Or should I just suck it up and buy the additive already added antifreeze. Our local dealer has the extended life as well as regular anti-freeze on sale now but not sure which way to go..Do I still have to test the coolant with test strips all the time??
Can someone please explain this to me as I have read all the archieves on this topic but I still don't understand this procedure. I have not purchased any anti-freeze yet until I hear from you out there.
This is my first pusher diesel so please bear with me on my questions. I know gas engines but not diesels.