.......recently I decided to run my 2012 Silverado through the brushless car wash at our Ingles Supermarket and was pleasantly surprised at the way it looked afterwards. Its a $5 bill for the simply wash and the paint looked really clean after I "wind dried it" coming home.
.....now the old 37 that I've been driving for over 20 years is showing its wear and tear AND since it sits in the shop, without a cover, it collects dust AND the "oil" that is in the air from all the stuff I do.
After I washed my Silverado at Ingles car wash I decided to take the 37 for a cheap rinse off. Well, it came out looking pretty darn good and after a quick run up the 4 lane at over 100 mph to dry it off I decided I'll do the quick wash more often.
Not sure what kind of soap ect that they use but the paint looked nice and clean/slick. My washing days are over!!
Oh, I NEVER use dish detergent on a paint job.