Maybe once every three or four month, or until I can't stand the look anymore.

Jim

I wash mine about every 2 weeks. I live 200 yards from a Buggy Bath so just take it there and use the Jet Wash, then bring it home to shammy it off in the Winter. In the Summer it's to damn hot to wash the thing.

Myself I washed it once since I got it, which was about 5 months ago. Otherwise it gets washed when I change my oil at the dealer. $15 and a car wash is not too bad.