Quote:
Originally Posted by lawless97
At my 65k maintenance for my 2016 SR5, they recommended drive belt as routine maintenance, since the schedule calls for 60k or 5 years. I've heard some people say they've gone 100k on theirs. How do I know it needs to actually be replaced? It looks okay to me and I don't see any signs of wear, but could there be stress on it that isn't visible that causes it to eventually break?
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The accessory belt seldom breaks or has "wear". The usually problem is the belt will become glazed due to heat, then it will squeal as it slips over the pulleys. That is the time to replace it.
You can tell a belt is glazed because it will be shiny and the ribs will be hard and possibly cracked. Yours does not look like that.
Some people try to extend the life of a glazed belt by , using "belt dressing", available at any auto parts stores, but that is only a temporary measure if the belt is already glazed.