[mdorazio]

Ignore the other answers to you - they're referring to refined products, not crude. Straight from the strategic reserve FAQ, crude oil doesn't really degrade if stored properly: https://www.energy.gov/ceser/spr-faqs#Q14

Note that if it's not stored properly, it can degrade due to water intrusion and oxidation, and it can just evaporate.

[rightbyte]

Oh, ye, well than there is no need to rotate. Assumed the reserve was refined, as it is where I live.