nutri grain bars, oil

Question

Rabbi Abadi, I was wondering if Kellogg's nutri-grain bars are kosher. They are marked KD. There are many ingredients, but I will send you them if you need them. Also, does pure oil need to be marked kosher? (sesame oil) Lastly, when you say that gelatin is kosher, does this apply to ashkinazim? Thank you very much. Shira Zagdanski