KYTEL, I just wanted to say hello to another KY person. I live in the PRP area and drive a 1996 Tacoma x-cab and absolutely love it.
As far as what grade of gas to use in your Tundra from what I understand 87 octaine or higher will work just fine. If it were me what I might recommend is to try all three grades of gas that is available locally and see which one the truck performs better with. Check your mileage with each one and if the truck runs the same and gets about the same mileage then I would use the cheapest of the three which would be 87 octaine, if not use the octaine that works best for you. I would also highly recommend that when you do the test make sure you buy the gas from the same station. I can't stand the reformulated gas that we have to use in Jefferson County it absolutely sucks, my Avalon gets about 5 more miles to the gallon when I buy gas out of town, as far as my Tacoma I really don't know because when I travel I usually drive the Avy.
Good luck with the gas thing and let me know how it goes.
1/2 RRUNNERKY