palmpalm

Where can I go to wash my car myself in/near montreal indoors this winter?

Gregster

There is a self serve one at the Ultramar on Newman in LaSalle

palmpalm

Yes but that's not indoors, it's just an outdoor washbay

joe_mtl

Don't know how up to date info is but I was curious as well and found this thread on another site with a map of locations.
I clicked on a few and some look like they may have what you are looking for, for others it was hard to tell.
Hope that helps.