I have a question.
 

Has anybody tested the theory that a good clean and waxed car has less wind resistance then an unwashed car. Now Im not talking about big chunks of crud on you paint just the average amount of grime from road salt and etc. Would having a good clean car help cd???? And why don't we have a detailing section for how to properly clean a car. Come on even places like myspace, photobucket, tcca, tccoa have it and most of those people wash thie cars with dish liquid and polyester towels and think rainx can be used on paint!!!!!:eek:

I don't think anyone has tested the theory, at least not scientifically. I personally think if there is any gain it would be so insignificant that you can't even measure it.

But then again, I've been wrong before. Test away :)

Probably not... But I'm no expert. Check this out for more info.

you can't a-b-a test it....once the car has wax on it...are you going to buy a wax remover and risk damaging the already super-thin paint?...It couldn't be worth it.

I used to wash my car every week. And wax once a month. I could put up a section like that. Its just a matter of going through everything ..

I have and the one time I hit 55mpg on my test loop was just after I had waxed the xB with Mothers - it really makes it slippery especially the leading edges where the air travels fast over the surfaces. I also waxed the windshield which ended up working better than rainx until the wipers moved the wax around on the glass and started chattering.

Perhaps in winter time a waxed up body might give better FE.

My unsuported theory is based on the idea that water will be more likely to run off the body than stick to it, thereby reducing weight.(from the excess water)

Ime sure it would be true , but probably by only a few hundred grams at max.

It probably wouldnt show up in a test.