Technicians debate using the min/max function of a digital voltmeter to test the battery and charging system on a customer’s vehicle to determine if the alternator has failed. Who is correct?

Do your customers know the benefits of magnetic oil drain plugs? Swap out their standard drain plugs to help protect against unnecessary engine damage. Magnetic drain plugs are especially helpful for vehicles with long oil change intervals, as well as many modern engines that rely on oil to actuate cam phasers, VVT systems and cylinder deactivation.
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