Help with PVC routing

[Moparmann]

Not trying to knitpick here but this is one of the things that drives me absolutley nuts and I dont know why...its a PCV not
PVC.
PVC is polyvinylchloride, PCV is Positive Crankcase Ventilation

As does "RPM's" , "MPG's", "needs replace" etc. It's REVOLUTIONS per minute, MILES per gallon, needs TO BE replaced! End of rant!! Knowledge is power!!