found this:

In order for the halogen cycle to work, the bulb surface must be very hot, generally over 250 degrees Celsius (482 degrees Fahrenheit). The halogen may not adequately vaporize or fail to adequately react with condensed tungsten if the bulb is too cool. This means that the bulb must be small and made of either quartz or a high-strength, heat-resistant grade of glass known as "hard glass".
Since the bulb is small and usually fairly strong, the bulb can be filled with gas to a higher pressure than usual. This slows down the evaporation of the filament. In addition, the small size of the bulb sometimes makes it economical to use premium fill gases such as krypton or xenon instead of the cheaper argon. The higher pressure and better fill gases can extend the life of the bulb and/or permit a higher filament temperature that results in higher efficiency.


The higher efficiency they talk about is the change in color and the appearance of a brighter light when switching to a xenon bulb. This is caused by a higher filament temperaure that will in effect make the bulb run hotter.

 

Hmm, that's some good info. I'll keep a close eye on them. I won't stick with the stock bulbs though so if they burn the harness lol... well I guess i'll have to play dumb ;P The yellow is just sooo... dull hehe. I'll see about grabing a hi/low HID later. Thanks for the info IK.

 

Any melted lenses yet????

 

None so far. hehe