So you just let it with no coolant hooked to it? And there is no need for it to be heated?
Deleting the PCVCoolantLoop is up to your own personal judgement.
On a cold engine, the coolant is also cold & doesn't warm up for several minutes.
The 5/16"PCVCoolantLoop operates parallel with the 5/8"HeaterCoolantLoop
& only flows coolant IF the HeaterContolValve is opened by the Driver selecting cab heat.
Both 5/16"CoolantOxBow on the PCVValve
& 5/16"CoolantHeatExchanger on rightside of IntakeManifoldThroat
get plenty of heat from the left ExhaustManifold & EngineBlock directly below them.
Again it's a personal choice.
When changing CoolantHoses, I discovered a cracked PlasticTee in this side loop
that's a FactoryOE molded assembly at outrageous cost, it made the decision for me.
PCVValve With 5/16"CoolantLoop
PCVValve wOut 5/16"CoolantLoop, HoseBarbOxBow Removed
PCVHeatExchanger With 5/16"CoolantLoop
PCVHeatExchanger wOut 5/16"CoolantLoop, HoseBarbs Ground Off