Discussion Starter · #1 ·
OK there is lots of info out there on coolant. I am getting confused. First off I have a 2003 7.3 with Green coolant in it. It needs to be changed. I plan to do the rad hose reroute, a 203 tstat and a coolant filter. This is what I think I have undersood from the many posts I have seen on the web. The use of SCA is basically a sacrificial lamb when using the green coolant for when cavitation occurs (it does not prevent cavitation form occuring). I also think understand that if I go to the RED ELC coolant it does not require the SCA to be added and is basically maintenance free for 300k. Is this because the RED already has an SCA in it which is basically a long lasting type? From what I have read the SCA's are hard on water pumps. I would love to be schooled on this. I have tried to decipher alot of threads and now I am lost. WHen I look at the Zerex ELC HD on the Napa website it says "precharged". I am assuming it has an SCA in it. If it does have an SCA in it why does it last so much longer than the bottled stuff you add to the green coolant. Clear as mud?