First, your 1998 Mercury contains no Freon which is R12. It contains R-134 refrigerant. You add R134 at the low pressure port. But the fact that you need to add R134 indicates you have a leak. It is illegal to add refrigerant to a system with a leak without first repairing the leak. Seek professional help and have the leak repaired.
Was built for R12, should be converted to R134a
To add Freon to a 1994 Grand Marquis, locate the low-pressure service port on the air conditioning system, which is typically found near the accumulator or the compressor. Remove the cap from the port and attach the refrigerant can with a gauge to ensure proper filling. Follow the instructions on the refrigerant can for the correct procedure and amount to add. Always check for leaks and ensure the A/C system is off before starting the process.
According to the 1997 Mercury Grand Marquis Owner Guide : ( 5W-30 ) is the PREFERRED oil
never use it
The EPA. They have no check or balance. Soon light bulbs will be a thing of the past, no more easy-bake oven. That's OK soon electricity prices will necessarily skyrocket.
can we
Regular Unleaded.
5W-30
According to the 1998 Mercury Grand Marquis Owner Guide : The engine cooling system capacity is ( 13.3 litres / 14.1 U.S. quarts ) So a 50 / 50 mix of distilled water and antifreeze would require : ( 6.65 litres / 7.05 U.S. quarts of distilled water and the same amount for the antifreeze )
To add Freon to a 2000 Mercury Grand Marquis, locate the low-pressure service port on the AC system, which is typically found near the accumulator or the firewall. Remove the cap from the service port, attach the refrigerant gauge and hose, and then add the appropriate type of refrigerant. Be sure to check the system pressure with the gauge to avoid overcharging. Always follow safety precautions and consult the vehicle's manual for specific instructions.
Why not.If it fits, then its ok.
5 w 30