I think the answer is "any normal antifreeze solution will do". There's no special requirement that I know of when fitting aluminium radiators. Mike explainedhow a 2-row radiator with a 1 inch to 1-1/8 inch cooling tubes were moreefficient than a 3 or 4 row with smaller tubes. Auto City Classic offers aradiator, part # SL-090A-AT-F, with 1 inch to 1-1/8 inch tubes. The outlet is onthe driver's side which allows a cross flow. 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. Coolant test strips are for measuring the concentration level and condition of antifreeze and the pH/alkalinity levels to determine when changing the coolant is necessary. The team Afco Racing Products provides key info on aluminum radiators to keep your classic truck cool. What coolant is good for aluminum engines? Ethylene glycol-based coolants are safe for aluminum when diluted with distilled water. Does Honda need special coolant? Every vehicle manufacturer, including Honda has developed its own coolant or requires a extra coolant that is unique to exact years and models. qrW5d.

do aluminum radiators require special coolant