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I know it can be hot and dry down here, but it isn't that hot or dry. Rob & others, you folks live in hot and dry climates. Have you had the same problem?
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Rubber anything doesn't last down here. Hoses, belets, etc all have a 1 year, 2 year max lifespan. Poly bushings seem to live a LOT longer than rubber in my experience. Also, rubber seems to hate oil, so poly really is the only thing I can use on most of my leaky vehicles.