
Originally Posted by
Alaric Darconville
A bulb with as many hours on it as "been in there for YEARS" suggests to me may be due for replacement, a) due to the potential that they can burn out the next time they're switched on, b) the filaments almost certainly have dendritic growth from filament redeposition (which spoils beam focus), and c) the bulb walls may have some blackening.
Are you referring to genuine Osram Silverstars, or to the Sylvania Silverstar. If the latter, then the GE NHPs are the better bet.