Radiator Wont Run Clean

[gdoto_520]

Hey Guys. I have flushed and cleaned my radiator countless time but somehow there is still some sort of rust because it is turning my antifreeze a rusty color. Is there anything else i can do?

[amc49]

Depends on what longlife coolant you are using, many don't tell you they can take up to 6 months to build up corrosion protection and the rust shows before that time period passes. I had trouble with Ford Focus cars with that until I went back to old school 'one year' coolant, which can easily go 3 years and has 100% corrosion resistance immediately instead of waiting 6 months for it. Problem solved.

[gdoto_520]

Ok. ill give that a try. thank you

[Ace2cool]

If you used dexcool (orange) that's your issue. It'll turn to sludge when mixed with green. Or even just on its own.

[amc49]

More than one other 'lifetime' coolant will do what I say, the one I had trouble with was a 'universal' type that was colored green to fit in with others. Color really doesn't mean spit any longer, you have to determine the coolant type beyond color. I sold like 4 green coolants when I was in parts, each one having different features.

[amc49]

Just drained (for maintenance) the one year which has been in one car for at least 3 years, minimal rust tint to it, it still looks green. Gonna put it back in when done.