I have a Champion 4 core 228221; radiator that has performed well in my new 416 stroker small block. I've put 3458 miles on the motor in 1 ½ years and driven a few times 80 miles @3700rpm to/from Willow Springs Raceway racing 60 laps/150 miles going about 130 mph @ 5800 rpm on straights. Radiator looks great inside, no rust, and no measured electrolysis. I run distilled water and Justice Brothers Radiator Cooler (RC/22P) and Justice Brothers Cooling System Protector ( CSP/1P). No major...