So why use Grenad-Oil® and how can I be sure that it mimicks the real Grenadilla Oil? Why is it so costly - is it worth it? Use 'Nature's Way' to oil your intrument with genuine Grenadilla Oil. Grenad-Oil® is absorbed quickly and completely into fine wood instruments and is the choice for the discerning musician that wants to add back exactly the same oil lost over time to their instruments. It is more costly because of the purity of the components and the R & D to perfect and manufacture it, but worth the peace of mind that you are treating and preserving you prized instrument with the best oil treatment available and a duplicate to the natural oil found in the wood. Composition of Grenad-Oil is verified by state-of-the-art Tandem Mass Spectrometry analysis. Powerful plant derived antioxidants are added for a long shelf life. 15 mL amber glass vial will oil one clarinet 6 times.