I've always thought you should really scrub the heck out of new road rash and get all the grit out. If you don't, you're prone to infection and scarring. When I was hit by a car (2002), the ER scrubbed and scrubbed and scrubbed (but was nice enough to numb me first). They missed one little tiny spot on my shoulder and I can still see the nasty little piece of grit in there under my skin.

I'm a big proponent of wet wound healing for road rash. Keep the wounds wet and covered (tegaderm, saran wrap, etc) and scrub them every day. Do not let scabs form. Your skin will heal from the inside out and your chance of scarring is minimized. Typically, you'll see pretty, new, fresh, pink skin in about 10 days.

Since it's been so long since your crash, I would ask your doc for advice.

Lorri