everybody jumps to the conclusion that oil and site injections = synthol.... it doesn't... it means site injections, period.
a guy running 5-6, or 7 or 9g of anabolics, even if it's high dose 350/400mg/ml test, or 200mg tren or 300mg eq or 300mg deca, you're still looking at 30ml of oil, why on earth would anybody at that level waste an injection site with an inert oil?