BenchTest
Senior Member
Two years and one week ago I installed the "upgraded" Sylvania lamps for hi/low beams on the truck. The OEM lamps were still operational, although dim. 46K miles is what I got out of the passenger side (assuming driver side will die sometime soon). Lights are rarely on as I don't typically operate in the dim/dark hours. I expected better longevity. Yes, they were installed from package to assembly with clean nitrile-gloved hands (I know somebody is waiting to blame finger oils/contaminants). Not here to b itch, just sharing my experience with the Sylvania product line. I have a friend that had similar longevity, or lack thereof.
