Currently, Wish Bone Dressings have O/U certification on only 2 varieties – Regular Italian and Robusto Italian. Additional varieties will be receiving certification in the near future. Every jar should always be checked for the O/U symbol to verify that it is from a Kosher (O/U certified) production.
From The KIB: Pesach News – Avocado Oil and Spray
All Pure Virgin Avocado Oil & Spray (without additives), are fine for use on Pesach without a special Pesach designation on the label.