Last Spring I changed the oil and filter on my "14" F-Type base. I baby this thing. I had under 13,000 miles on the car. Over the driving season I added some 300 miles. I didn't want to be around people or go anywhere. I'm now vaccinated. Thank you Mr. B. I'm approaching getting it ready for this year's seasonal driving. Would you change the synthetic Jag spec'd oil and filter or keep it and change it next spring? I know synthetic oil can get dirty, but I don't see where it would lose its lubricating ability. Challenge my thinking.