The Proper care and feeding of Panthers
Engine Oil: Run only Tier 4 Synthetic 5w-20 (or 0w-20 if you know the engine is in fantastic shape) Motorcraft Synthetic, Mobil 1, or Ams-Oil
Interval: 7,500 Miles (or 15k with 7,500 oil filter change)
Engine Coolant: Peak Global Lifetime, change every 4 years.
Engine Oil Filter: Motorcraft, or Wix/Mann. No exceptions.
Interval: 7,500 Miles
Engine Air Filter: Motorcraft, or Wix/Mann. No exceptions.
Interval: 15,000 Miles
Fuel Filter: Motorcraft, Wix/Mann, or Racor. No exceptions.
Interval: 30,000 Miles
Transmission Filter: Motorcraft, or Spax-Filtran
Interval: 50,000 Miles
Transmission Fluid: Type-Mercon V: Motorcraft, Valvoline, Mobil 1, or Ams-Oil
Invertal: 50,000 Miles
Power Steering Fluid: Type-Mercon V: Motorcraft, Valvoline, Mobil 1, or Ams-Oil
Interval: 50,000 Miles
Differential Fluid: 75w-90 Synthetic: Motorcraft, Valvoline, or Ams-Oil
Interval: 100,000 Miles
Brake Fluid: DOT-4 (any reputable company)
You have just purchased a 16 year old Panther with 200k Miles. Please check/change the following:
Brake Fluid: Suck everything out of the reservoir, re-fill, and bleed whole system, you will thank me.
Power Steering Fluid: Flush it, remove the return line from the reservoir, put into a 5-gal bucket, and pour fresh fluid into the reservoir as some one SLOWLY turns the wheel with the engine running, when fresh fluid comes out of the return hose, turn off, re-connect hose, and fill reservoir.
CHECK: Tie-rods, Ball-joints, U-Joints, and Sway-bar Links. The original ones are non-greasable, you likely still have them on, save up and consider replacement in the near future. It will ride SO much better. Use only Moog, or Motorcraft. Alternative: Replace entire control arms with new units by Dorman.
CHECK: Air ride system, it is 16 years old, if the rear air shocks are leaking, do not dispair. Find a parts house which can order from World Pac, replacement units by Arnott are quite affordable.
REPLACE: Front Oxygen sensors, they are likely responding slowly by now, they have 200k miles on them. New ones respond quickly and will make the engine run much better. (If you need to pass smog inspections, consider replacing the rear O2 sensors as well)
Door Seals: Use a good quality silicon spray lubricant on the door seals, it will keep them supple and will give you the best results.
INSPECT: Spark plugs, Gap spec is 0.054in Run only Platinum, or Iridium plugs, you want to take the plugs out of the heads as few times as you can on this motor. Autolite, or NGK.
Prepair for: You have 200k miles, and you have a COP engine (Coil over Plug) expect them to start failing soon. They are ~$50ea, if you get a misfire code for a specific cylinder, swap the coil on that cylinder with another, if the miss follows the coil, change it.
For starters.