Lack of oil or water??
no its driven by the serpentine belt
Yes, you have to loosen engine mount
It's located on the block, just above the water pump
The thermostat on a 1992 LeSabre should be inside of the top radiator hose inlet. You can easily change it by removing the top hose and water inlet.
just changed it today, located right side of engine, under to the right of the engine cover , has wires coming off it looking like a bolt,, water will come out when you loosen the bolt.
vehicle does not have a water filter
210 to 220f
if it's not raining, the heater core is leaking
under the water pump.