New member here & new Mercedes owner - just purchased 2012 SLK350 - upon reviewing manuals they indicate to never use a touchless car wash and when uysing wand type - do not get pressure to close to paint and do not spray directly on wheels - should I just put it in a glass case - live in upstate NY and need washes now and then when it can't be done outdoors at home - had 8 years of Corvettes and used all kinds of car washes - didn't seem to hurt finish or anything else - any comments - Thanks.