How much oil do you put in when it is on empty for a 1998 Ford Falcon station wagon?

You should not rely on an online forum for this information. The amount of oil needed for a 1998 Ford Falcon station wagon when the dipstick shows empty is not a fixed number. It depends on the specific engine your vehicle has. Adding too much oil is just as bad, or even worse, than adding too little.

To find the correct amount, consult your owner's manual. It will specify the exact oil capacity for your engine. Alternatively, you can look up your engine type (e.g., 4.0L Cologne V6) and search for the oil capacity online using a reputable source, such as a trusted automotive website or repair manual.

Do not just guess. Incorrect oil levels can seriously damage your engine. If you are not comfortable checking and adding oil yourself, take your vehicle to a qualified mechanic.