By the way ace134,
If you're looking for a carrier oil for your brew, grape seed oil is commonly used. I have used it. However, I would recommend you look into canola oil (made by Wesson).
Something I noticed a few months ago: The bottle neck of my grape seed oil had these gel-like droplets of oil formed around it. They're semi-solid and are sticky. I checked the bottle neck of my canola oil, and the oil did not form these semi-solid droplets. Does this mean that the canola oil has less saturated fat than grape seed oil?
Now, I don't know exactly how this difference could effect the quality of the brew itself, but for storage, I'm guessing that using an oil that doesn't form a semi-solid when exposed to air might be a better choice.