Gunslinger Posted May 2, 2022 Report Share Posted May 2, 2022 G13 coolant is not recommended for cars with brass or copper cooling systems and heaters. You should use a good ethylene glycol coolant for older cars. You'll have to change it more often than the long life types but its chemical makeup won't attack the cooling system components or cause clogs. Link to comment Share on other sites More sharing options...
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