Read the back of a 1 gallon jug of "AC/DELCO" brand of dex-cool for your admision...sort of. AC/DELCO states;

"can be used in '94 and newer gm vehicles (exept Geo, Saturn, and '94 Chevrolet Cavilier 4cyl.), but must be replaced every 2years / 30,000 miles to... Login to read more.