Just discovered that the transmission shop that I used last week to flush my transmission and change the transfer case oil, used the wrong oil in the transfer case. Instead of using the gear oil in a bag, in the floorboard (75W-90)...he used the 80W-85W-90 that was in the back hatch. Didn't catch it till just now. What kind of problems, if any am I looking at? I live in Texas so the temperature is mostly high. Just made a 400 mile trip in it as well.