Best way to remove/prevent the yellow fog on headlights?
 

My lights are staring to get that yellow fog.. How do I remove it? How do I prevent it in the future?

Sometimes it can be polished out. Most auto parts stores carry a kit.

Discoloration is usually caused by UV and/or heat. Only way I know to prevent it is to keep your car garaged and never turn on your headlights.

If you polish it out and wrap the outside with some UV protective film it should help prevent it from returning, but some people argue that the films can damage your headlights.

I'd suggest just taking them off and polishing it out every year or so. That's what I do.


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my local detail-er shop did them for me as i don't have the equipment $50.00

oops I forgot about refinishing the yellowed headlights.

here is a before shot
http://www.the370z.com/members/surfd...e-sanding.html

during shot
http://www.the370z.com/members/surfd...3-sanding.html

and the finished product (waaaaay better)
http://www.the370z.com/members/surfd...-good-new.html

step 1 mask off with tape
2. wet sand with 600 grit
3. 1000 grit wet sand
4. wool pad buffer/compound
5. cotton pad/compound
6. heavy foam pad/compound
7. med foam pad/compound
8. light foam pad/compound
9. apply acrylic sealant
10. light polish with light pad/compound
11. enjoy not having to buy and install new covers!!!!

Polish it out and seal with this:
Opti-Lens Coating

im not too sure what really causes the yellowing of lenses, but im thinking it is from autowash causing tiny scratches to the surface + uv.

like my G35C is 11yrs old this year and the lens is absolutely clear. i use the car as my summer time dd, never ran through a carwash (unless the dealer did it during delivery.. :rolleyes: )..

so after you do the wet sanding + polishing to remove the yellowing, keep a good coat of polymer sealant on there or maybe even a layer of clearbra for headlamps. Keep it away from harsh chemicals and autowashes.

Will do.. Any truth to the rumor that clearbra is bad for the headlights?

It's a bit hard to put on due to the complex curves of our lens covers and I've heard it increases heat inside the lens.

from my experience on an older car i had, i've not encountered any negatives.

I dont run clearbra on my lamps on my G or Z.

I have a toyota yaris (my old car) and what I did to solve that problem was:

1. I wet sand the clear surface with 1000, 1500, 2000 and last 2500 grit paper. The grit could vary depending on how bad the surface is.
2. Once the surface is clean, I clear coated it with urethane (The same used on top of the base coat of your car). I put three coats, that is enough for the job.
3. After the clear coat was dry, I sand it and polish out all defect.
4. Done, I did that 5 years ago and the headlights still looking like new.

None that I know of. I have had clear bra installed on over 6 of my cars and each time it included their head lights. I have to say that, in the beginning, my C6Z06 had dark smoked headlight protection film (Lamin-X) for nearly 3 years when I noticed very minor surface crazing/checking. Now, their headlights are famous for doing this anyway, whether the film has slowed down or accelerated the process, I have no clue.

I removed the film, had the headlights checked and replaced, and clear film (the same 3M film used for clear bra) installed over them. To this day, I have not found the crazing/checking on the new lenses.

If I could take a stab at it, I doubt clear bra film would damage a headlight lense, especially for those cars with HID or LED headlights since there is no appreciable heat generated by headlight operation. Even with an incandescent halogen bulb, the heat is minimal especially while the vehicle is in motion. A typical clear bra film is also coated with an anti-UV, so the film will also protect from UV light degradation.