Car Washing?

[Mustang_Driver]

I Just thought i would ask this as i have been an avid car show junkie for for the past 10+ years but recently i sold my car and had to buy a mini-van (NOT my proudest moment) but i went to wash the van and noticed that i had run out of car washing soap and was wondering if anyone could give my some insight on something as the internet says different/varying things.

Yahoo.com answers says you can wash your car with a 1/4 cup of dishsoap mixed in water to wash your vehicle

Wikipedia says dish soap will strip the waxes and protective barriers off the car

As my van is just sitting in the driveway collecting dust while i am job hunting and it's not insured, I was going to wash it but only found Sunlight Dish Soap lemon scent. I know i don't need a 1/4 cup of soap but maybe a couple teaspoons just to get the water foamy/sudsy. Will this amount harm my paint or will i have to wax it right after i wash it the temps here are reaching 30c and it is in direct sunlight all day and i know that i can't wax in the sun see beginning of post but t really needs a bath from dust and pollen build up