ignore that last answer, only use green antifreeze if your system has been converted over, you use factory gm coolant called dexcool, it is orange.I do recommend converting your system over to green because nomatter what gm says, I've ran onto a lot of problem with dexcool, dexcool gums up so bad over time. Just tell your machanic you want your system switched to green, he will do an intense job of flushing out entire coolant system if he is a good machanic.
AnswerGreen 50/50 anti-freezeIf the Blazer is gasoline powered the antifreeze can be any kind that is for sale for gasoline powered vehicles.
Any brand of antifreeze can be used in a 1998 Chevrolet Blazer. It is recommended that a person uses 50 50 antifreeze.
Dexcool ORANGE in color.
rocket fuel
It takes the green Antifreeze
R134a
5w30
GREEN color.
Dexcool is recommended.
4L60-E
Obd ii
Green