How old are these motor oil companies?

[Mark72]

I know that Valvoline claims to be the oldest motor oil company out there and based on history and all their documentation, they are, but are the others like Pennzoil, Castrol, Mobil, and Havoline all that far behind? Did most of them come out around the same time period, or not too long after Valvoline was introduced?

 

[addyguy]

Schaeffers is really, really old, too.

 

[Johnny]

Not sure how old Mobil is as it was part of the original Standard Oil Company. Pennzoil is right up there with Valvoline.