Pec - seriously? Are you being sarcastic or is the question genuine???

Uh ya, injecting any oil based compound into an active vein is potentially deadly. Oil is too thick and once it travels to the heart and off to your respiratory system, your heart rate accelerates, you will experience respiratory distress and possible failure resulting in cardiac/circulatory collapse (worse case). Most of the time this is avoided by aspirating but even in the absence of aspiration, if the injection is gradual, as the oil enters your circulatory system you would experience pain, discomfort, breathing difficulties, and an irregular heart rate. It would take more than a few drops to kill you, but exactly how much is a variale I would not gamble with.

Bottom line.....do NOT inject any oil compounds directly into a vein.