2003 Buick LeSabre Owner's Manual - Page 276
2003 Buick LeSabre Manual
Page 276 highlights
Notice: When adding coolant, it is important that you use only DEX-COOL@ (silicate-free) coolant. If coolant other than DEX-COOL@ added to the is system, premature engine, heater core or radiator corrosion may result. addition, the engine coolant In will require change sooner at 30,000 miles (50,000 km) or24 months, whichever occurs first. Damage caused by the use of coolant other than DEX-COOL@ not covered by your new vehicle is warranty. -- What to Use Use a mixture of one-haii clean, brinkabie water and one-half DEX-COOL@ coolant which won't damage aluminum parts. If you use this coolant mixture, you don't need to add anything else. coc.,nt warning system __ set fc- -he oper coolant mixture. With plain water or the wrong mixture, p u r engine could get too hot but yobe wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a50/50 mixture of clean, drinkable water and DEX-COOL@coolant. Notice: If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost wouldn't be covered by your warranty. Too much waterin the mixture can freeze and crack the engine, radiator, heater core and other parts. If you have to add coolant more than four times a year, have your dealer check your cooling system. Notice: s t you use tne proper cooiant, you cion't have to add extra inhibitors or additives which claim to improve the system. These can be harmful. Adding o Carl be ain water t c Dur cooling !stem FiaEn waier, wr- swiijeUiiier liquid such as alcohol, can boil before the proper coolant mixture will. Your vehicle's CAUTION: (Continued) 5-25