1999 Buick LeSabre Owner's Manual - Page 219

First Edition for Buick LeSabre Owner's Manual - 1999 yellowblue C-45-6705-T C-45-6703-T 2. Then keep turning the pressure cap, but now push down as you turn it. Remove the pressure cap. 3. Fill the radiator with the proper DEX-COOLR coolant mixture, up to the base of the filler neck. (See "Engine Coolant" in the Index for more information about the proper coolant mixture.) 5-17