Okay, I have a 2013 Range Rover Sport HSE lux which is basically a garage queen. Last year it only travelled 100 miles on the new transfused Castrol edge titanium 0/20 extended performance. A Blackstone oil analysis proved that the oil was intact as well as the TBN. This year it will only have traveled 30 miles. Can the oil last two years without changing? It's synthetic unlike Dino. Any feedbacks? Yes, only 16,000 miles.