Weigh your oil in solid form. You can get the calorie per weight. I find it is far more precise as per volume, with anything.
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Liquid. Solid changes the density.
13.6g is a serving of oil. You are not going to accurately track your macros through tablespoons and cups. Volume is a poor way of measuring because it is susceptible to voids in density. You need to purchase a food scale and weigh in grams.
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