Recent changes:
1965 Mustang 289 2V
Out: Royal Purple 15w40, Motorcraft FL1A
In: Mobil 1 TDT 5w40, Motorcraft FL1A
1966 Ford Ranchero 289
Out: MS5K 10w30 with a quart of gas in it (Holley power valve was bad), fram PH8
In: 5 quart frankenbrew, FL1A
Out: frankenbrew with lots of black sludge particles from the gas breakin down the sludge
In: Lucas convention 10w30, dumped an reused filter (oil was a penny, waiting to ensure sludge cleaned up by gas in oil is gone.)
2008 yukon XL
Out: valvoline synpower 5w30, ac pf48 6k miles
In: Same
2009: F150
Out: Castrol Syntec, motorcraft fl-820s 5k miles
In: 5 qts QSUD 0w20, 2 qts penzoil 5w30 syn blend.