EOT VS ECT

I have an 04 Superduty with a 8.5" procomp lift, 37" tires, 4'' MBRP cat delete, and a Edge juice with attitude. Now that I have the ability to monitor temps I noticed a difference between EOT and ECT. Idle Temps are ECT=194 and EOT=208, however when I'm rolling down the freeway without any load the temp are at EOT=226 and ECT=192. I've read that these are signs of the engine oil cooler starting to go, any help would be useful. Oh and I'm running the juice at level 1 for mileage.