Norm,
Havoline doesn't make anything. It's just a label. It's currently a label owned by ChevronTexaco Corp., and you probably won't see the Texaco name on much of anything else in the U. S. in the near future. Present Texaco gas stations are actually Shell (really Motiva, a joint venture between Royal/Dutch Shell and Saudi Refining), and will be rebranded.
The Havoline of the last few years was made by Equillon, a joint venture between Shell and Texaco.
Who's on first...?
Ken