But what comes out of the pump is very different, which is where the "all gas is the same" people are not correct.
California alone has at least 22 different fuel blends mandated by the CARB. That's why gas from one station might be $0.10 more than the "same gas" from the same station brand 1/2 mile down the road in a different city.
EVERY jet in my WR250F's carb was covered with a green "fuzz" Looked like green baby powder but it was on solid. Soaking in carb cleaner helped, but everything needed wire brushing and most of the jets ended up having to be replaced.
This happened twice on two bikes... Costco and Sam's gas.
We've never had a problem with Chevron.