Train Whistlin' Ex driver
Join Date: Dec 2017
Location: Montgomery, TX
So, from what I've seen in these forums any spread greater than 15 is cause for concern. I can tell you that my 03 is EGR
deleted, running stock location oil cooler, and today in Alabama was at Max 180-187 coolant and oil (I usually have about a 7deg spread between them - Houston summer was near 200deg if not slightly above). If you have a relocation kit (post a pic of the engine bay if you're unsure) then the delta equation is different. But, if you're running a stock location you may be in for work.
2003 Excursion 6.0, 2004 front cover, Stock head bolts, unknown EGR delete, 4" Diamond Eye turbo back exhaust, Magnaflow 60110 catalytic converter (makes the '03 whistle livable), Hellwig Sway bar, Roadmaster Active Suspension, Gearhead tunes - 8k tow or SRL depending on my level of 6.0 paranoia, unknown work by previous owners...