I live just over the Washington border in the eastern part of the state and go to Oregon frequently. Same situation as you've found compared to California - Ore

I live just over the Washington border in the eastern part of the state and go to Oregon frequently. Same situation as you've found compared to California - Oregon is normally $0.10 or so cheaper per gallon. Often the attendants will wipe your windshield, check your wipers, tell you the sports score and weather, etc. It's rather charming really. Even when I was in Portland on business, I don't think I ever viewed it as taking any longer for the attendant to do it over what it would have taken me. If you really want to do it yourself, you can get a commercial fuel membership and pump away at those stations.