2016 SR5 with 70k miles. Recommended preventative maintenance is to replace the drive belt at 65k. Dealer wants $250 to do this but it looks very easy to do on my own. Should I replace it now or add some more miles to it first? I see a lot of people saying they didn't replace it until 100k+ miles. And if I do it myself, do I also need to inspect the "idlers" and tensioner? I have seen people recommend that as well. Do I just spin them to make sure they move freely?
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