Change your air filter, and oil. I think the low end gas has been making my truck run rough. Switch to Shell too. You may have a point, they may be adding stuff. Could we measure this with a cheap diagnostic tool?
My oil and air is fine, I use shell only now
Scotty recommended this tool, might be worth a try.
He ran the inspection check and it had a section for fuel. I think this may be my next investment for the truck.
Your assuming everything is OBD2.
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