ManJust went over 300k on our 2004 RX330. Steady diet of Pennzoil Platinum High Mileage 5W30 with 6oz Tufoil since around 90k.
Used some today for very first time. I used Valvoline for many years espcially in my trucks before the synthetics found their way to all of our store shelves.I’ve used Valvoline Maxlife HM 10w30 for years in my 5.3 and at 234,000 miles…no runs, no drips, no errors!