I have a 1970 Mustang Mach 1 with a stroked HP 351w. I Changed the oil with Mobile 1 full synthetic 15W50 in Nov 2020. The car is stored in an attached garage in the winters with a dehumidifier running. I ran the car ~ 300 miles in 2021. Not much due to covid and no car shows. The car is back in storage until the spring 2022. So the next time its run the oil will have been in the crankcase for ~ 1.5 years and would be in it for another 6 months (250 - 500 miles). The question I have to the experts is, should I dump this oil due to the time in the crankcase now? Previously I ran oil in this car for ~500 mile and 1 year. I can repurpose it in a car (2001 trooper) that is driven much more. Feedback is appreciated. Alan