The amount of refrigerant required for an air conditioner is always on a sticker on the unit or nearby.
How do you change the thermostat in 1999 Mercury Villager
Yes.
would like to know where the speedometer sensors are on a 1999 villager
According to the 1999 Mercury Villager Owner Guide : ( 20.0 US. gallons )
You would have to be more specific regarding which filter you are talking about.
In the engine.
No, no room.
134-A
That would depend entirely on what state you live in?
4.5 quart
ABS was an option. Not all have it.
In the fuel tank.