Weekly Fuel Market Report – September 6th-12th, 2026
Did You Know That R99 Is The Same Cost As Diesel Currently?
Call to set up R99 Mobile Fueling Onsite Service in Portland at the same cost of retail diesel. Dyed untaxed R99 is also available. Give us a call today to schedule your delivery.
Wholesale Price Average 9/12/26
| Wholesale Low | Wholesale Avg | |
|---|---|---|
| E10 | $3.79 | $3.95 |
| B5 | $5.68 | $5.79 |
| B20 | $5.57 | $5.73 |
| R99 | $5.60 | $5.73 |
Average Retail Prices 9/12/26
| National | Oregon | Washington | |
|---|---|---|---|
| Regular Gasoline | $4.30 | $5.06 | $5.54 |
| Diesel | $6.06 | $6.41 | $7.05 |
Taxes
| Federal | State: OR | Local | State: WA | |
|---|---|---|---|---|
| Gas | $0.184 | $0.40 | $0-.13 | $0.554 |
| Diesel | $0.244 | $0.40 | $0-.13 | $0.584 |
Portland Retail Fuel Price Variance
Fuel Market News
Fuel prices skyrocketed this past week as military drone strikes resumed between the U.S. & Iran. The United States completed strikes on multiple Iranian tanker ships, while Iran-backed Houthi forces launched attacks against Saudi Arabia. The Houthi forces struck multiple oil refineries, causing the shutdown of the vital East-West pipeline. Soon after, global oil prices skyrocketed, up $20 per barrel in less than 48 hours. Murban Crude is currently trading at a high of $119.5, with WTI Crude at $100.00.
Drivers in the Portland area are still seeing gas around $5.25/gal & diesel over $6.40/gal. In Seattle, gas prices are $5.65/gal with diesel hovering around $7.05/gal.
For the first time in history, the national average price for diesel is $6 per gallon. This hits American logistics and transportation hard, while the federal oil reserve is currently at 285.36M barrels, 32% less than it was in March at 415.44M barrels.
The 1-5 Corridor will have a planned 5-7 week shutdown of the 1-5 Corridor next to the Moda Center. This will begin September 11th 2026. For more details, visit our page or call in and ask for Ian.
Important Note: Per the City Of Portland, “Distributors in the City of Portland are required to meet the minimum biofuel content requirements for all fuel they distribute beginning on May 15, 2024. All diesel fuel distributed to retail stations, non-retail dealers, or wholesale purchaser-consumers must include a minimum of 15% biofuel content, from either renewable diesel or biodiesel. This requirement increases to 50% on May 15, 2026, and 99% on May 15, 2030”.
Brent Crude oil is currently hovering at a price of $105.60/barrel.
Crude oil is the main ingredient for gasoline and diesel. Per AAA, on average about 50% of what you pay at the pump is the price of crude oil, breaking down as 25% refining, 11% distribution & marketing, and 14% taxes – a helpful breakdown for consumers wondering why they are paying the prices that they pay. Crude Oil is currently trading at $105.60/barrel compared to $91.18/barrel last week and $82 a year ago.
It’s essential to recognize that fuel prices result from a complex interplay of the factors mentioned above and other regional factors. Additionally, prices may vary by specific regions within Oregon and Washington. For the most precise and up-to-date information on fuel prices and the causes for these price changes within your area, use the links below for AAA & GasBuddy.
If you have any questions, feel free to contact Star Oilco and speak to one of our fuel market advisors to discuss how the market can impact your business.
