Quoted from Clnilsen:Just today I had a claim for a bad engine wiring harness rejected by my extended warentee company because I didn't use factory bulbs when I replaced a foglight and the air filter. I had bought the Manufacturer's own branded platinum plan as well.
So not just not worth it, but hell not worth it.
Not only is that total bull, I'm pretty sure it's illegal too. "Warrantors cannot require that only branded parts be used with the product in order to retain the warranty." https://en.wikipedia.org/wiki/Magnuson%E2%80%93Moss_Warranty_Act