Carrier Oil Shelf life before and after brewing

[Sampei]

Guys I was checking online the shelf life of MCT oil and Castor oil for example, on average is said that 2 years is the possible shelf life of both.
Now I wonder, if I brew it does it last longer with the BA added from the brewing?
Because many ppl report using vials of 3-5 years old without any issue, so why isn't the oil gone rancid?

 

[EmberWave]

With %3 BA, the shelf life will be at least 4 - 5. The last batch produced Balkan Pharma in 2021 has a use by date of 2025 and they use MCT. My recommendation for BA is 3%

 

[EmberWave]

These are just recommendations, I have not done this before, I am just sharing my information as a result of my research

 

[Sampei]

With %3 BA, the shelf life will be at least 4 - 5. The last batch produced Balkan Pharma in 2021 has a use by date of 2025 and they use MCT. My recommendation for BA is 3%

BA3% is crazy gonna increase PIP 100%
1-2% max. I would go for 1% just to reduce PIP chances at the minimum
thanks for the info anyway