Carrier oil comparison for PIP reduction - GSO vs MCT vs EO

After using products from several labs over the past three years I have noticed significant variation in post-injection pain that correlates strongly with carrier oil choice rather than the compound itself. Grapeseed oil (GSO) gives me the least PIP consistently, MCT is close behind and works well for sub-Q. Ethyl oleate (EO) blends feel thinner going in but I get more delayed pip at 24-48 hours. Cottonseed oil is the worst for me personally. Would be interested to know what others have observed, particularly whether the compound concentration interacts with oil type to affect pip.

GSO is my preference too. MTS uses a clean oil and I get basically no PIP even at higher volumes. Cottonseed always wrecked me, used a lab years ago that ran everything in cottonseed and my quads were sore for days. EO I find helps compounds dissolve better at higher concentrations but the 24 hour pip you mentioned is real. If I have a choice I go GSO every time.

MCT for sub-Q, GSO for IM, that is my setup. Some guys react to EO regardless of concentration, think it is an individual sensitivity thing. High concentration gear in any oil will pip more, a 300mg/ml test is going to hurt more than 200mg/ml in the same oil. MTS oil is smooth, no complaints across multiple compounds.

Interesting topic. I had bad experience with one lab using EO, delayed pip was very bad. GSO is smooth for me. I think also injection technique and warming the oil makes difference. I warm vial in warm water for 2 minutes before injection and PIP is much less regardless of oil type.

Warming the oil is underrated advice. Even average quality oil pips less when it goes in warm. GSO has been the least problematic for me across the board. I had one bad batch from a different lab years ago in what I think was castor oil, walked with a limp for a week. Never again.