My 85 300SD- Pulled rad, Mixed 1/2 BOTTLE OF LIMEAWAY and water filled rad up to to of hose nipples, let sit overnight drain out, back flush throughly, , also cleaned out trans cooler and flushed trans - one hose into bucket, fill as pumped out while slowly shifting through gears, used 2 gallons ATF - requires 2 people, but I have done it alone many times on all my cars -chevy-ford-dodge-volvo for years, quick and easy. Replaced AF with Zerex G05, Temp dropped 10-15 degrees! To 82. This is on a all copper radiator.