what antifreeze do my 99 buick park avenue
i have 1999 buick park avenue i had the coolent flushed out but the guy didnt rememeber what coolent to put back in to my car
I'm sure he added the standard green coolant or ethylene-glycol based. Brand isn't all that important as formula. You shouldn't mix the green coolant with the newer yellow and orange kinds.
go green! The orange stuff goes bad and plugs your heater core unless you change it out on a regular bases. I've had bad luck with the orange.
GM says to use DEX-COOL (silicate-free) coolant.
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