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Cake day: June 21st, 2023

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  • In terms of performance, a K&N is the way to go, but if you’re looking for reliability, the regular old paper filters are better for your engine. They’re a much finer filter medium and catch a lot more dirt than a K&N will. Also the price difference is negligible, a paper filter is usually around 15-20, while a K&N is closer to $50 or $60 plus the future $30 or so for a recharge kit to clean and re-oil it.

    When it comes to oil changes however you’ve definitely got the right idea, cheaper with better oil and better filters. Also I do know that K&N uses a finer mesh in their oil filters than most compettitiors, so its worth it there.



  • It would allow engineers to create glass panes for windows that not just darken on demand, but selectively filter certain wave lengths of light. The windows could filter out infrared light while allowing visible light through, which would keep buildings cooler without eliminating natural light. The compound, tungsten oxide hydrate, can can selectively absorb different wave lengths of light depending on the current and amount of lithium ions applied to the material.