Hello. I love my 2001 A6 Quattro 4.2 v8. She is sexy as hell. She is well maintained at about 188,000 miles. The previous owner, for whatever reason, had been using the orange Dexcool 50/50. I know this isn’t what’s recommended. Please share what you all believe to be the best coolant as I want to switch. Also, im
using a full synthetic high mileage Mobil One. Is there any suggestions on a better choice for engine oil? Thanks so much