You most likely clicked on this thread so you could tell me to turn on my defroster. Well, the fogginess is on the outside of the lower part of the windshield. It seems to disappear when I go over 40 MPH but grows very large when I am going under 20MPH (to a point where I have to use my windshield wipers in order to see). I tried Rain-x in the passenger side corner of the windshield in attempt to make the stuff "bead up" but it had no effect. I'll take pictures if anyone is still wondering what the heck I am talking about. Anyway, are there any products I can use to stop/slow the fogginess?

 

turn OFF your defroster... you'll see. trust me!

 

Happens if defroster is on or off.

 

hmmm.. it used to happen to me when i used to use the defroster on cold, and that would make the inside of the windshield colder than the outside air, and that caused condensation on the windshield.

 

I'll try again tomorrow without the defroster on.

 

There is a slight of hand somewhere in that Honda stuff that came with your car, something about defrost on cold for a minute then all the the way to hot, I don't really remember its in there somewhere.

Are you on recirculate? If so switch to taking in outside air.

Did you try cracking a window?

Is your coolant level ok?

 

Just turn the temp control up two or three clicks to warm the air when you are using the defroster.

 

yeah turn the temp up. from your scneario, it sounds like you have your defroster on cold air when your windshield is foggy. that clears it up but after a while it makes water condense on the outside because (insert scientific explanation here). you can just defrost it with warm air and let the windshield heat up warmer than the outside air and it won't happen anymore.

 

rainx makes something called fogX too.

 

It may do it even if you don't have the vents set to defrost. Many cars don't completely seal off all vents other than the ones you have selected, so some air will still trickle out the other vents. If you have the dash vents blowing cold, some will blow out the defrost vents, too. This cools the glass nearest the vents and causes moisture to condense on the outside. This is most likely to happen when it is warm (thus the need for AC) and humid (thus the condensation) like summer mornings.

As was mentioned, if you're running AC, don't run it full cold. You might also try the floor vent position instead of the dash vents (or vice versa) to see if a different setting better seals off the defrost vents.

Pretty sure Fog-X is intended for the inside of windows. Don't know how it would do on the outside.

 

Three clicks worked wonders. Had air on 1 with defroster/leg vents on. Thanks for all of the help, guys.

RainX makes products for both the interior and exterior of glass. I used the normal RainX stuff on the outside as the interior stuff said not to use on the exterior.