Washing would be fine.

I would take advantage of the helpful guys at Meguiars:

www.meguiars.com

They have a 1-800 number, and could talk about products that you can use on your paint.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".