1995 Oldsmobile Achieva Owner's Manual - Page 233

To Check Coolant To Add Coolant If you need more coolant, add the proper mix at the surge tank, but only when the engine is cool. When your engine is cold, the coolant level should be at the FULL COLD mark, When replacing the pressure cap, make sure it is tight. LOW WASH FLUID LOW COOLANT LEVEL If this light comeson, it means you're low on engine coolant. Surge Tank Pressure Cap NOTICE: Your pressure capis an 18 psi (124 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. %%en you replace your surge tank pressure cap, a GM cap is recommended. 10 6-23