2003 Sable 3.0 OHV (Vulcan) V6
Out: Mobil Super 5,000 5W20 with 1/4 quart topoff via HD30 oil *SL Spec Purolator L20195 Filter
In: Valvoline NextGen 5W30 5.1Q jug (.6 quart over what it needs, but the vehicle is ok with that) Motorcraft FL400S Filter
Notes:
Old oil was not black, but a dark amber, not opaque but not charcoal black, engine is doing better now that i cleaned it out via marvel mystery oil for 3,000 mi, and running decent oil through it, 5,000 mi more and Pennzoil Yellow Bottle with a Purolator PL20195 goes on it. Vehicle seems smoother on 5W30 than 5W20, as it has 175,000 mi on it. After pennzoil 5W30 is used, may try 10W30 and see if it makes any other differences, if no difference will return to 5W30.