I bought a used 2018 Jaguar XF 2.0 (25t) 32K miles on it at a VROOM dealership here in Houston, Tx. Everything in the car is in immaculate condition. I checked the oil before I drove it out of the dealer & the oil was newly changed. My question is after 300+ miles of driving this car the oil still looks new. I wonder what oil did they used or is it the car?