I recently bought a 2003 Excursion 6.0L Powerstroke with 117,000 miles. The previous owner (pre-dealer) put quite a bit of money and time into it, updating and upgrading the vehicle. So, it's had the following within the last two years & ~2,500 miles. I'm wondering what else it might need so that it's as reliable as can be? I'm not eager to do head studs unless it actually needs them, but would appreciate suggestions on other mods/upgrades that would help with reliability.

Edit / PS: I’ve read the tech/new owner threads, and I’m aware of what’s recommended in those threads, e.g., EGR delete. I don’t want to “delete” if I can avoid it, but could be persuaded with expert guidance.

Thanks in advance for suggestions!

Recent repairs/updates:

· New Fan Clutch

· New Batteries

· New Fuel Filters

· New Transmission Filters

· Transmission Fluid, Axle Fluid (front & rear), Transfer Case Fluid changed

· Upgraded Cooling System / Coolant Filtration System / Oil Cooler flushed

· Billet Coolant Y-pipe

· S&B Cold Air Intake

· Ford 6.4-liter Starter

· Ford 6.4-liter Transmission Pan

· Fuel Pressure Regulator Upgrade Kit

· OE Engine Wiring Harness

· OE FICM Harness

· New Glow Plugs / Glow Plug Harnesses

· XDP 200-amp High Output Alternator

· Heavy Duty Aluminum Intercooler w/Cast Aluminum End Tanks

· XDP Intercooler Boot Kit

· MBRP Armor Plus T-409 Stainless steel exhaust system

· Bilstein 4600 Shocks

· Bilstein 5100 Steering Stabilizer

· F-250 V-code front/B-code rear leaf springs

· F-250 Rear Sway Bar

· Adjustable HD Front Track Bar

· Front Leveling Kit

· 2017+ F-250 Telescoping Tow Mirrors

· Brake System: Remanufactured Calipers, New Rotors, New Pads, New Rubber Lines

• 18” Black Rhino Arsenal Wheels / Nitto Ridge Grappler LT295/70 R 18 Tires

 

Nice looking Ex!

IMO, an upgraded HPOP wouldn't be a bad idea.

How are your coolant and oil temperature differentials?

 

Thank you,@bismic! Is HPOP a major job, a simple swap, or something in between? Is there a particular brand/type I should consider?

I just purchased a scan tool (Blue Scanner), will monitor temp differentials and report back.