Stay in your car, Portland
If you even start to get out of your car to pump your gas you will immediately be noted as an outsider. At no point on your visit to Portland, or anywhere in Oregon, are you going to pump your own gas. We have a crew of highly educated gasologist that have spent many years of rigorous training and schooling to master the art of gas pumping. To even attempt to pump your own gas would be like grabbing the brush away from Picasso and making a few strokes of your own. Unlike Nike.. the saying here is, “Don’t do it”.
In Portland, more than just about any other major US city, biking is a way of life. People bike for health, entertainment, and transportation. Please be considerate of bike riders. They have the right to be on the road and driving in the bike lane is NOT acceptable, not even when making a right turn. Or even better, leave your car behind. Portland has a great public transit system. You can get to most places by bus, light rail, or street car easily. Walking and renting a bike are also good options.
In this day and age, self service is the norm. But not in Portland, at least not when it comes to gasoline. Oregon is only one of two states in the US where you cannot pump your own gasoline. In 2003, a bill was introduced in the Oregon legislature to allow self service gas pumps. It did not get enough votes to pass. So, the rule of thumb is "hands off the pump". In Portland, maybe.
I had my first "no self service" experience when traveling through Oregon back in 2001. I got out, ready to fuel up and was told that there was no such thing as self service. I was then told to swipe my credit card through the machine. The "full service" attendant then placed the nozzle in my cars gas tank and walked away. Didn't seem like full service to me.
That was in some small town along the Oregon Coast and I'm not sure if that is what constitutes full service gasoline in Portland. I'm told it is not and that people wait in their cars while gasoline is pumped for them. That sounds like a nice perk on a cold and rainy day actually. Whether you like it or not, you will not be allowed to pump your own gas in Oregon. If you drive along the Coast though, don't expect full service treatment.