CO2 injection has emerged as a pivotal technique in the petroleum industry, offering a cost-effective option to enhance oil recovery while contributing to improved environmental sustainability. The mass transfer of CO2 into reservoir fluids is the primary mechanism responsible for CO2 solubility trapping and enhancement of oil recovery. The minimum miscibility pressure between CO2 and crude oils controls the performance of any CO2-enhanced oil recovery (EOR) and storage project. This paper investigates the influence of reservoir conditions on the CO2-oil miscibility during CO2 injection in oil reservoirs. To do so, pendant drop tests were conducted, and CO2-oil interfacial tension (IFT) was measured at different pressures and two temperatures. The minimum miscibility pressure (MMP) and first contact miscibility pressure (FCM) between the CO2 and crude oil were estimated from the measured IFT values by applying the vanishing interfacial tension (VIT) technique. The measured MMP was found to increase with reservoir temperature as MMP increased from 1175 psi at T=27°C to 2007 psi at T=70°C. Similarly, the FCM pressure was found to significantly increase with reservoir temperature. This research provides a valuable guide for screening oil reservoirs suitable for EOR and CO2 storage.