Glad you made it to Moab ok. Once you get settled in up in Washington, locate the Shell stations there and start using their fuel. You might get special discounts if you open a Shell credit card if you prefer to do so.

I had a similar positive result with Shell fuel with my first car. It had a Chevy 305 V-8 with 105K. When I used Shell premium, the engine wouldn't make the pinging sound.