I picked up my 335i sedan in early May and had the Picus new car prep done (car is Monaco Blue over Lemon). Looked fantastic. I now hand wash only.
Car doesn't bead up much any more after hand wash.
I am now thinking of picking up a Zaino package of products Z-2, Z5, Z9, Z10 etc. (since everyone on the forum seems to think it is the best).
Will these products be ok on top of your new car prep?
Do I need to Dawn wash and clay first?
Will I need a PC buffer or can I do it by hand?