Headlights Dim about 10% per Year

SYLVANIA asked me to review their headlight replacement bulbs.

Used their search engine to find the bulb number -1999 Jetta = #9004 – and they arrived in the mail.

Installing the new one required no tools, pop in and out.

Headlights dim by about 10% per year,
so 3 years in, and 1/3 of the brightness is gone

Built a test lab in my yard.

The car is 7 feet away, CL is the centre of the headlight, and I’m trying to measure the spread sideways, since something that darts usually comes from the side, not the front.

But the results are not translating in the photo, at all.

Plus I forgot to clean the headlights (despite blogging a cheap & fast solution on Monday.)

Through the grime though, the new lights are noticeably brighter, and woah, I’m driving in dim conditions for no reason.

Friendly reminder to replace your lights, because there’s dark times ahead guys.

The reason to choose SYLVANIA over another brand can be explained in 5 words: You’re probably already using them. Because SYLVANIA supplies most of the auto manufactures.  See my old bulb in the top photo? There’s a good chance that’s the factory original.

SYLVANIA SilverStar ULTRA Headlights

Don’t cheap out on a most essential part of driving – seeing.

Available at Canadian Tire


This post has been brought to you by SYLVANIA Headlights.



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