Of course this holds true for any engine but for the 3.5 EB TREMOR owners, here’s something that you might be interested in. Not bad for 73K on the odometer.
I’m a Valvoline fan, using their Full Synthetic might do Restore and protect at 50k and than switch back. At 23k now, oil change at 4-5k intervals.I’m thinking of switching to Valvoline Restore and Protect for its cleaning results
right at $109.00 for same , changed my oil every 3k for 40 years , NowFord can do it , and thats the mobil service , 3k to 4 k full synthetic !) old school RULES!!!!$69 at the Ford dealer for synthetic blend oil change and tire rotation. Every 5k miles