HollyFrontier produces the widest
range of Base Stocks in North America.
The oil you need for every formulation and every
application, from heavy-duty industrial to high performance
automotive. HollyFrontier Base Oils
(Group I+) and Petro-Canada Base Oils (Group II,
II+, III), one source for unequaled quality, supported
by an unbounded attention to your requirements.
Group I+ Base Stocks.
Group II, II+, III Base Stocks.