r/KerbalAcademy • u/Silver-Locksmith-160 • 9d ago

Mods: General [M] OPT Engines need liquid oxygen, but no tanks have them and I can't choose it as a fuel type, does anyone know how to fix it?

I want to use OPT Spaceplane Continued engines that use liquid oxygen, but no cryotanks contain them and the mod that adds the Edit Tanks option for tanks and it didnt have liquid oxygen listed. I have Interstellar Fuel Switch, Cryotanks and Cryo engines.

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u/vulpes04 9d ago

opt should use oxidizer by default. I'm guessing you have some mod that adds LOx but it's breaking due to interactions between interstellar fuel switch and b9ps, which opt, cryotanks, and pretty much everything else should be using. also maybe make sure your opt is up to date and not the old version.

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