Cloudy Radiator Coolant (After Flushing)

I wouldn't get excited about a little cloudiness in the coolant. It takes many flushes to get it even close to clear and most store-bought flush today is wimpy. I bought 5 lb of powdered citric acid on ebay to use. You don't even know that the cloudiness is little bubbles. The one time I truly had a failed head gasket in a 1982 Dodge Aries (common problem), I got a "brown mousse" of oil floating at the top of the radiator. I ran it a whole summer that way. I drove 20 mi to work fine, but it would boil-over just as I got home every hot summer, so I just flushed in new water by jamming a hose down the radiator top.

I have not had an early round-top Mopar radiator that did not split the seam on the front side (opposite hose, like you). That is an endemic problem. Some shops knew how to solder in an internal brace to make them last longer. When you finally tire, a 22" wide square-top radiator fits, but check where you need the tubes, or go w/ a slick aluminum one, since work better and some are only ~$150.

If you really think you are getting combustion gases into the coolant, there is a test kit for that where you suck gas from the top of your radiator thru an aqueous solution that changes color if there are combustion products, or many shops use an old emissions probe. I got the kit from Cal-Vans but it never changed color. Don't recall if I tried it on my Aries, but no need since the oil was obvious.