Which gasoline has PEA?

[y_p_w]

Standard Oil does not exist anymore.

Yep. And even the referenced article makes it pretty clear that the corporate name changed in 1984.

 

[Tomat]

Texaco caltec and chevron used pea additive in there fuel

Chevron is owned by Standard Oil. Here are some other brand names owned by Standard Oil: Texaco, Unocal, Caltex, Delo, Havoline, Revtex, Ursa and Techron. So it's possible that Unocal and Texaco gas have the same additive package as Chevron. I don't know why they would want to complicate things by having a different additive for every fuel brand under the same ownership, but I guess anything is possible in this crazy world.