I may be mistaken but, if I recall correctly, the issues with Dex-Cool weren’t limited to leaking intake gaskets. While the intake gaskets were a major issue, I seem to remember that it also caused corrosion of aluminum cooling system components including water pumps, radiators and possibly even cylinder heads. Modern copper/brass radiators usually have 1/2-inch tubes, while aluminum radiators use 1 or 1 1/4-inch tubes. Copper/brass radiators typically have two, three, or four rows of tubes, while aluminum radiators typically have two. Radiator tanks are made of 0.080-inch 3003 aluminum for strength and durability. The bigger advantage to an aluminum radiator is the number of fins per inch. While copper/brass by itself may cool better than aluminum, c/b radiators usually have far les cooling fins per inch and therefore a lot less surface area and that has a drastic effect on a radiators cooling ability. Time to continue the story about radiators for liquid cooling. We have covered the basics about radiators in the Part 1 blog, and in Part 2 we even showed some charts. Part 2 clarified things about radiator performance, how radiator performance is expressed and how do we read radiator performance charts. We have shown how two of the most popular radiator sizes (120 and 140mm), with different Better cooling techniques are wider tubes and shorter fins. This added"tube to fin" contact area determines the efficiency of the heat sink. A typical 4 row copper radiator uses 7/16" tubes while the aluminum radiators use two rows 1" tubes. The copper heat sink then uses 1/2 high fins, while the aluminum heat sink uses 3/8" fins. 3 core brass, or if you must, 2 core aluminum. Mounting a wider (67+ big block style) radiator can also help a lot, but requires some modification. However, all this being said - overheating problems are almost always caused by timing issues, problems with the radiator cap not holding pressure, bad thermostat, or lack of shroud/adequate fan. Coolant composition. A 50/50 mixture does not help cooling it raises the boiling point. Run 100% distilled water with water pump lubricant or distilled water with about 15-20 % antifreeze. Both cool better than 50/50 and still lubricate the water pump to prevent corrosion in system. When the weather cools return to 50/50. Thanks to Constant Contact for sponsoring a portion of this video. Head on over to www.constantcontact.com to learn more about what tools they offer to help .

do aluminum radiators cool better