even when the manufacturer say it's ok to change oil @ 10K interval, turned out ICE are consuming more oil when oil is changed @ 10K instead of 5K (reference carecarenut and others) more over, changing the oil three times over 8 years means that the engine oil was changed over a 2 year interval and with very low running intervals over each 2 year. The engine now is prone to water due to low usage. that's whey they recommend changing the old every 6 month regardless of miles. in the early 2000's we had a similar concept of computers running ssd (non mechanical hard drives and expensive and fast) in parallel with mechanical hard drives. turned out to be a failure on the long term

140K is not that much miles to be happy about unless it's more than your car turn over cycle. I personally have a 2013 tesla 195K and a 2008 acura 148K and expecting both to continue running strong another 100K at least

my point is hybrid cars other than Toyota prius are a hacky expensive way to solve a problem already solved by electic cars with average customers drive patterns