injection

I am on my 7th week of a 12 week cycle of Sust and a 10 week cycle of deca. Up to now i have had no problems. Last thursday i injected into my left shoulder. I know have a swollen mid size bubble on my shoulder. It is squishy to the touch and not warm. it is not that painful and i can still lift...

Whats everyone's opinion on which of these oils, or others make the best vehicle for injs?