What can I say to make my dad change his mind that I NEED TO CHANGE THE DIFF OIL.
He got the brakes done today at our Toyota dealership and my dad asked the Service manager about that I needed to change the diff oil.
My dad told me after I got back from school that "There was no need to because the tranny and diff were sealed and that there was no way to get into the tranny or diff and that the truck will stay with those fluids FOREVER." (close to what he said--- cant remember all of it because I was furious about it)
I told my dad about the awesome write-up about changing the diff fluid from Chris and Brian. He didnt care...... he just argued with me about it.