Evans is a good coolant for high-performance builds, and works great with aluminum radiators because there are no electrolysis worries. But Mike does suggest using a single-pass radiator instead of a double-, or triple-pass unit. "Single-pass is better to enhance flow," he said. "Evans performs better with more flow. Every square inch of the water jacket is directly connected to the thousands of square feet inside the radiator. The surface area inside an aluminum radiator is pretty insane. Adding a ground to the radiator would do as much good as adding a grain of sand to a beach. Old racer buddy told me to use zinc anodes. The old brass types do a better job. Racers use aluminum radiators to save weight, but that would be kind of silly on a 3500-pound street machine. Besides, if your classic-era car is designed for water only, an aluminum radiator will have a short life unless you run coolant as well, and that puts you back to running hot. 12lives Control the controllable, let the rest go. I've been reading up on aluminium radiators on the forum and have not seen anyone mention using antifreeze made for aluminium engines/radiators like the new HOAT (Hybrid Organic Acid Technology) stuff. When replacing the radiator in the wife's minivan last month, I used the Zerex G-5 coolant. Available for about $12/gal at wal-mart. Working fine in my champion 3 row. No more concerns about test strips or SCA's. Pull the two drain plugs in the block, fill with distilled water, drive around until its warm, pull both drain plugs in the block and the one on the radiator. Then fill with the orange stuff. The pump utilizes one-inch diameter openings and features 60 percent more flow than a factory ZL1 pump, and is compatible with the '10 to '14 5th-gen Camaro, and all 4th-gen F-body cars. Lingenfelter's high-capacity radiator is comprised of aluminum, and is a dual-core construction. The package is compatible with '10 to '14 Camaro SS and I6GcZ.

do aluminum radiators require special coolant