Thank you for taking time out of your day to stop and check out my listing today for your viewing pleasure. I have a very old Santa Fe either water or kerosene bucket this particular bucket is in great shape. I believe this is actually water but I'm not exactly certain. The interior does not have any type of residue which would tell me that it is not oil as there's no residue whatsoever. But I'm also noticing it's not green and my understanding is that green or blue would always be kerosene. If you have any specific questions, please reach out. Thank you for your time