I don't agree with this.

My dad worked for Union Oil (Unocal) his whole working life from age 18 to retirement, and was in charge of their refinery operations for a time.

Even though a refinery will supply gasoline for the different brands, the formula and amount of their detergents that each brand calls for is different, so yes, you do get what you pay for.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".