What is Red Oil Used for in Subnautica?
Red oil? I think you might be talking about Blood Oil! You can find it in the Blood Kelp Zone and use it to craft Benzene, which is useful for advanced crafting recipes.
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In Subnautica, Blood Oil can be refined into Benzene. Benzene is used to craft synthetic fibers and other advanced materials. Happy diving!
Blood Oil, not red oil, is used to make Benzene. Benzene is necessary for crafting synthetic fibers among other things.
Blood Oil = Benzene. Easy peasy.
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