It comes from all around the world. But in some towns it comes from Murphy's oil.
Penzoil makes Quacker State Motor oil
mobil makes the oil
They sell a crappy brand called - "certified motor oil".
Advance motor oil is made by Coastal
PEAK makes peak motor oil, they are known for their antifreeze products before they launched their motor oil line. It's apparently already sponsored the IndyCar when it was first launched in 2007, and is being called "premium motor oil".
Omni specialty packaging makes the orilly brand oil
Omni specialty packaging makes the orilly brand oil
Advance motor oil is made by Coastal
If it is the conventional oil it REALLY does NOT matter who makes it. Most conventional motor oils are the same. With conventional motor oil just use the recomended viscosity and change it often.
If you go to the Mazda web site it states Castrol motor oil is used.
Edmuns.com has an article on it which says that ExxonMobil is a blender of Honda motor oil.