Buy a kit at Wal-Mart or auto parts store comes with instructions
According to Advanced Auto Parts the Thermostat is located on the lower radiator hose at the engine. Thanks, Kit
In the plastic bottle on the inner fender.
Down the dipstick tube.
Radiator. Remove the cap and add coolant there.
dip stick tube
You add it down the dipstick tube.
When the engine is cold you can add to either the radiator or the coolant recovery bottle.
Buy a kit at wal-Mart or auto parts comes with instructions
You have a coolant leak somewhere. Fill and check underneath for any obvious leakage.
It doesn't have one per se. The antifreeze overflow serves as the car's radiator cap. If you need to add antifreeze, add it there.
Yellow cap, under the hood, driver side, near the base of the windshield.
On a first generation Neon (95-99) The coolant reservoir is located at the back of the engine on the passenger side. It should have a square yellow cap.