The reason you are not supposed to lubricate lug nuts is not because that may allow them to come off. As mentioned above a bolt depends upon stretching to maintain enough force to keep it from loosening. Different type of lubricant will greatly vary the amount of torque that needs to be applied to a fastener to attain the correct stretch. The only way manufacturer can be assured the the proper amount of force is applied is to is to have a uniform method of tightening the fastener. Specifying clean, dry threads is one way to accomplish this.
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Today's Featured Article - Talk of the Town: Winterizin Engines - To Drain or Not to Drain? - by Staff. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "Winter is fast approaching..for a gas tractor should the gas tank be drained and run the engine til the carb is dry or do the gas stabilizer products I've heard of work? (tractor will not be used til spring) any other tips for winterizing?? "
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