I tried the Rain X anti-fog a short while back...this stuff is junk and made the fogging MUCH WORSE. I threw the rest of the bottle away.

I am not sure on the other anti-fog products..but several other people have said it does not work.

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2000 F-150 XLT, 4x2, 5.4L Supercab, Styleside, Black with silver two-tone, 3.55, class III towing package with heavy duty cooling package, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, Pendaliner bedliner, K&N air filter, rubberized undercoating, cabin filtration system, Bugflector II, 5W-30 Mobil 1, engine build 10/4/99

Anti-Fog
 

Do any of these anti-fog liquids really work?
I know Rain-X makes them.

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99 XLT 5.4L Regular Cab 4x2 120" Wheelbase 4 wheel disc brakes/ABS 5 star larait style wheels Toreador Red/Silver 3.55 gears 255/70/16 OWL Delta toolbox, Ventshades, Bugflector, Bullrings, Donnelly compass mirror, 2" Rear drop.
Eclipse 5340 cd player
Memphis ARCS50 component speakers w/tweeters mounted flush in the door panels (excellent sound)powered by a Sherwood 35x2 RMS amp
Jensen 50x2 RMS for the 2 Audiobahn AWC10 subs
regcab54@sc.rr.com

I agree with Dustoff...throw away Rain-X anti-fog. That stuff just puts a film on the inside of the windshield that makes its own fog. It starts out OK but after a week or so the stuff starts making an uneven film at various spots. You are better off just keeping the windshield clean and using the defroster. IMHO, of course.

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'99 F150 SC, 4x2, Oxford white, flareside, 5.4, 3.55 rearend,
bodyside mouldings, Snugtop hard tonneau, K&N dropin and airbox mod.
Duraliner drop-in (gave up on the Penda Nascar). Gibson Supertruck
No door cracks yet at 5K!!!

Future mods: 2/4 lowering, bra and some Roush stuff.