Originally Posted by MuttGrunt
Also look into Optimum No Rinse washes which can be done in your garage.
Here's your answer. Unless you go mudding in your M3, an Optimum No Rinse wash is a safe, effective, inexpensive and quick way to wash your car. Used correctly
, it is no more likely to cause swirls than a traditional wash.
Here's my baby. Over a year since any correction was done, and strictly ONR washed CAREFULLY in that time. I love the stuff, couldn't live without it.