Dexcool
The 1999 Saturn engine uses dexcool type coolant. This coolant is different form other types and cannot me mixed with another type.
R134
regular green stuff
R134a
Yellow
R-134a
Standard green Ethelyn Glycol, or any type of Global coolant will work. always be sure your coolant mixture is 50/50, 50% water and 50% coolant
The primary coolant type used for a 2008 Dodge Grand Caravan 3.8 is G-05. It is a synthetic coolant with an orange appearance.
A 50/50 mix of distilled water and Dexcool antifreeze.
Dex-cool.
For a 1999 Saturn SL2, it is recommended to use a universal antifreeze/coolant that meets the GM specifications for your vehicle, typically a 50/50 mix of coolant and distilled water. You can also check your vehicle's owner's manual for specific recommendations.