Hi Scotty, thx for the channel.

I recently bought a new 4Runner TRD off road, unfortunately I drove it about 250 miles in 4H on the interstate while pulling a trailer with a motorcycle.  I didn’t know how to work work the 4WD and it didn’t feel like there was  a problem while driving it.  After reading up more, according to the dealership that could’ve heated up the differential oil and they recommend that I bring it in to have the front and rear differential oil changed.  
A lot of confusing information about it.  
What do you think? Could I have possibly damaged anything? No burning smell and drives fine.  This is intended to be my last vehicle so I want to do the best thing for it..  

thx again, I watch your channel all the time and a big part of my decision to go with the 4Runner.

mike