Warranty items mostly consist of the items purchased with the ability to monitor itself. And some of it is something that must be done prior to sale, such as a change of the liquid.
Most of the guaranteed purchase items for those with the ability to monitor itself. And some of it is something that must be done before the store sold out already, such as changing the fluid.
Most of the items that guarantee the buyer has the ability to monitor it. And some are what to do before leaving home store already, such as changing the liquid.