The odometer turning over to 100,000 miles is considered by many to be a rite of passage for a vehicle
social.ford.com
"Norman and Debbie Conner traded in their 2002 Ford F-350, it had just over 1,071,000 miles on it.
Consider the story of Duane Thalan, who recently crossed the 1,229,000-mile mark in his 1999 F-250 and is still going. In fact, his truck still has the original fuel injectors."
But who cares. None of us here will reach 1M miles. If my truck goes 2-300k miles, I'd be happy. I think most, or all, modern trucks--Toyota, Ford, Nissan, etc., that won't really be a problem.