I have a 2004 LaPalma. For the past 13 years I have hand washed it with a long handled brush and Dawn dish soap.
I wash and scrub the roof with a strong mix of Dawn about twice a year.
I went through a truck wash that used high power sprayers and my refrigerator quit working for a day or two. Never again.
I'm going to get beat up on using Dawn so while I'm at it I'll throw in the fact that I use regular toilet paper too. No RV toilet paper. Two toilets and nary a problem over the years.
Oh I forgot to mention I don't use a water filter either. Nor a surge suppressor!!!
I'm hiding under the table now, gonna get mean in here soon.
2004 Monaco La Palma 36DBD
Workhorse W22 8.1 Gas Allison 1000, 7.1 mpg
2000 LEXUS RX300 FWD 22MPG 4020 LBS
US Gear Brakes