Don: Did you mean "water" in reference to what's in your cooling system? If you did..that's where your rust is coming from.

Paul

If you had to replace one freeze plug, my money says the others will soon follow. I would recomend changing them on your schedule rather than waiting for them to fail at an inopertune time.

! quart white vinegar to the system for 50 miles or so is good, 1/2 bottle of CLR for the same amount of miles is better. flush THOROUGHLY afterward!

BOO- YA!!!

I've got a fair amount of rust in my cooling system water and was wondering what the best way to remove it is. I also have an old can of Dupont Cooling system cleanser like I used to use in the 70's, appears to be oxalic acid. Should I use this, or is there something newer and better. I gave some thought to just repeatedly changing the radiator water, but don't want to do this again for a while. I might add that I had to replace one freeze plug (above the oil filter) and don't relish the idea or replacing the rest.



Thanks,

Don