Hello Scotty, I bought a two-owner 2006 Tundra 4.0V6 (base-model) with 255,000 miles last October (2020) for $3200.00. Prior to buying, I found out, from viewing public vehicle service reports, that both owners had seemed to exclusively gone to dealerships for oil changes. I base that on the mileage recorded at each oil change and also noticed a lot of things had been done to the truck that were only identified by the word "serviced". I also found that the U-joint located at the differential was replaced by a private shop, which I verified by visual inspection. So naturally, I have no idea of what specific maintenance has been done to this truck. I have heard you talk about timing chains and transmission oil changes on older vehicles, but I thought I'd ask you about how they might relate to this particular situation. All fluids looks normal and the tranny seems to preform normally. At this point, should I drain and refill with new fluid? Moving on; I get a low pitched droning noise which sounds to be coming from the front right area of the truck. It only happens at speeds between around 56 and 72mph and then goes away. Lifting the truck up off the ground and checking the wheel bearing for play, dragging or grinding noises shows that the bearing looks and sounds to be functioning normally. I'm hesitant to just replace the bearing because it is the pressed-in type so I can't do it as a DIY project. I don't want a repair shop to do it until I have your opinion about it. My last question has to do with the recent periodic vibration in the steering wheel that goes away shortly after it starts happening. It may be going away when I temporally stop accelerating. The issue is sporadic and I can't totally say that, in every instance, the front end stops shaking because of that. One side not, prior to this problem, I had just put in 5 gallons of 6 month old "just in case" gasoline in the tank. The steering wheel and front end are what's shaking the engine seem to be running normally. I'm around your age and I can't fully express how I miss the days of manual timing adjustments and being able to see the ground in the engine compartment. Can you please address these issues for me?  Scott  PS: Love your videos. You're a truly respectable man who is dedicated to helping your fellow Americans. I strive to be as you are. We seem to be a dying breed.