Correct, got that, but too many guys fail to consider dosages. 3cc of straight oil in the glute? Sure, not a problem. I've pushed as much as 5ml but don't encourage it. There can be a big difference between ml and mg though. 2ml of 400mg/ml in my glute causes a heck of a lot more PIP than 2ml of 100mg/ml gear. 800mg vs 200mg is a big difference but the volume (2ml) is the same. Concentration/dosage needs to be factored in.

Regardless though, using the same area to inject repeatedly even if rotating left and right sides isn't the best approach.