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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.

Copyright © 2019 HollyFrontier Refining & Marketing LLC. All Rights Reserved.