Owner's Manual
Page 231
... engine could overheat and badly damaged. What to add you use an improper coolant mix, your warranty. You can freeze and crack the engine, radiator, heater core and other parts. Too much water in the mix can also use a recycled coolant conforming to GM Specification 1825-M with a complete coolant flush and refill...
... engine could overheat and badly damaged. What to add you use an improper coolant mix, your warranty. You can freeze and crack the engine, radiator, heater core and other parts. Too much water in the mix can also use a recycled coolant conforming to GM Specification 1825-M with a complete coolant flush and refill...