Rear Differential

Just a bit of info. I got my rear differential oil changed @ 76k,75w90 Amsoil at my local lube place. I have been taking my truck to them since I changed over to synthetic. Very professional people who actually know wtf there doing. Most of them I taught in my welding class. I know what most of you are thinking....why are you not changing it yourself. I have little time, so I spend that time wisely. Anyway, I told them I wanted to see what the oil and drain plug looked like. I was surprised somewhat that the oil was clean and drain plug had a couple of small shavings. I don't tow much and don't go off-road much. I'm not trying to say you should wait that long, but I'm definitely satisfied with the outcome. Toyota makes one helluva truck.