|  | What is the difference between 1-K and 2-K Kerosene? 1-K Kerosene contains less sulfur than the 2-K grade, which means you can use it for portable space heaters that are not vented to the outside. You should only use 2-K Kerosene in heaters with flues connected.
How do I become an ExxonMobil customer or a kerosene distributor? Contact your Business Development Manager by dialing 1-800-375-4328 (DSL-HEAT) and selecting Option 2.

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